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Help with Hallicrafters S-77
Hi
This looks like a sensible news group! who but sensible people would want to repair and play with Old Knackered Radios :)) Being a lonely Brit trying to refurbish an old American Radio I'm a bit stuck, I have repaired the old girl and it works very well after sitting in a garage for many years as a home for spiders, But I can't seem to align it correctly in as much as I can't get the osc to track the dial reading and keep it in good spec across the band? also I'm a bit worried about the bandspread dial, it reads 100 with the tuning cap fully in this means as you go up from 0 to 100 you are going down in frequency? is this right? or has someone strung the dial cord incorrectly? do I align it with the bandspead cap fully meshed or not? I could really do with the alignment instructions has anyone got them out there? I've looked for a manual but they either want lots of $ (whatever they are :)) or the ones that are available don't have the circuit or alignment details :(( Also :) Are there any transfers or refurb material available I'd love to respray it but don't want to lose the original transfers or logo, any help very welcome from Ron G3YUH |
"Ron" wrote in message ... Hi This looks like a sensible news group! who but sensible people would want to repair and play with Old Knackered Radios :)) Being a lonely Brit trying to refurbish an old American Radio I'm a bit stuck, I have repaired the old girl and it works very well after sitting in a garage for many years as a home for spiders, But I can't seem to align it correctly in as much as I can't get the osc to track the dial reading and keep it in good spec across the band? also I'm a bit worried about the bandspread dial, it reads 100 with the tuning cap fully in this means as you go up from 0 to 100 you are going down in frequency? is this right? or has someone strung the dial cord incorrectly? do I align it with the bandspead cap fully meshed or not? I could really do with the alignment instructions has anyone got them out there? I've looked for a manual but they either want lots of $ (whatever they are :)) or the ones that are available don't have the circuit or alignment details :(( Also :) Are there any transfers or refurb material available I'd love to respray it but don't want to lose the original transfers or logo, any help very welcome from Ron G3YUH I've never worked on this particular radio, but I believe it's similiar to the S-40A, which I have. The bandspread cap must be fully open to align the radio. The bandspread dial might read "Set to zero for normal tuning". If so, it should be at zero with the bandspread cap fully opened. Both knobs should close it's respective tuning capacitor (lower frequency) when rotated counterclockwise. I mention that because the dial stringing diagram is incorrect on my service manual. The oscillator frequency is above the signal frequency on bands 1 - 3 and below it on band 4. The BoatAnchor Manual Archive has the service manual online: http://bama.sbc.edu/hallicra.htm So, how hot does that ballast resistor get? Frank Dresser |
"Ron" wrote in message ... Hi This looks like a sensible news group! who but sensible people would want to repair and play with Old Knackered Radios :)) Being a lonely Brit trying to refurbish an old American Radio I'm a bit stuck, I have repaired the old girl and it works very well after sitting in a garage for many years as a home for spiders, But I can't seem to align it correctly in as much as I can't get the osc to track the dial reading and keep it in good spec across the band? also I'm a bit worried about the bandspread dial, it reads 100 with the tuning cap fully in this means as you go up from 0 to 100 you are going down in frequency? is this right? or has someone strung the dial cord incorrectly? do I align it with the bandspead cap fully meshed or not? I could really do with the alignment instructions has anyone got them out there? I've looked for a manual but they either want lots of $ (whatever they are :)) or the ones that are available don't have the circuit or alignment details :(( Also :) Are there any transfers or refurb material available I'd love to respray it but don't want to lose the original transfers or logo, any help very welcome from Ron G3YUH I've never worked on this particular radio, but I believe it's similiar to the S-40A, which I have. The bandspread cap must be fully open to align the radio. The bandspread dial might read "Set to zero for normal tuning". If so, it should be at zero with the bandspread cap fully opened. Both knobs should close it's respective tuning capacitor (lower frequency) when rotated counterclockwise. I mention that because the dial stringing diagram is incorrect on my service manual. The oscillator frequency is above the signal frequency on bands 1 - 3 and below it on band 4. The BoatAnchor Manual Archive has the service manual online: http://bama.sbc.edu/hallicra.htm So, how hot does that ballast resistor get? Frank Dresser |
Hi Frank thanks for the info, I wish Bama did have the manual but when I download what they say is the manual all I get is a couple of pages on replacing the ballast resister :(( from Ron.... On Wed, 08 Oct 2003 13:30:26 GMT, "Frank Dresser" wrote: "Ron" wrote in message ... Hi This looks like a sensible news group! who but sensible people would want to repair and play with Old Knackered Radios :)) Being a lonely Brit trying to refurbish an old American Radio I'm a bit stuck, I have repaired the old girl and it works very well after sitting in a garage for many years as a home for spiders, But I can't seem to align it correctly in as much as I can't get the osc to track the dial reading and keep it in good spec across the band? also I'm a bit worried about the bandspread dial, it reads 100 with the tuning cap fully in this means as you go up from 0 to 100 you are going down in frequency? is this right? or has someone strung the dial cord incorrectly? do I align it with the bandspead cap fully meshed or not? I could really do with the alignment instructions has anyone got them out there? I've looked for a manual but they either want lots of $ (whatever they are :)) or the ones that are available don't have the circuit or alignment details :(( Also :) Are there any transfers or refurb material available I'd love to respray it but don't want to lose the original transfers or logo, any help very welcome from Ron G3YUH I've never worked on this particular radio, but I believe it's similiar to the S-40A, which I have. The bandspread cap must be fully open to align the radio. The bandspread dial might read "Set to zero for normal tuning". If so, it should be at zero with the bandspread cap fully opened. Both knobs should close it's respective tuning capacitor (lower frequency) when rotated counterclockwise. I mention that because the dial stringing diagram is incorrect on my service manual. The oscillator frequency is above the signal frequency on bands 1 - 3 and below it on band 4. The BoatAnchor Manual Archive has the service manual online: http://bama.sbc.edu/hallicra.htm So, how hot does that ballast resistor get? Frank Dresser |
Hi Frank thanks for the info, I wish Bama did have the manual but when I download what they say is the manual all I get is a couple of pages on replacing the ballast resister :(( from Ron.... On Wed, 08 Oct 2003 13:30:26 GMT, "Frank Dresser" wrote: "Ron" wrote in message ... Hi This looks like a sensible news group! who but sensible people would want to repair and play with Old Knackered Radios :)) Being a lonely Brit trying to refurbish an old American Radio I'm a bit stuck, I have repaired the old girl and it works very well after sitting in a garage for many years as a home for spiders, But I can't seem to align it correctly in as much as I can't get the osc to track the dial reading and keep it in good spec across the band? also I'm a bit worried about the bandspread dial, it reads 100 with the tuning cap fully in this means as you go up from 0 to 100 you are going down in frequency? is this right? or has someone strung the dial cord incorrectly? do I align it with the bandspead cap fully meshed or not? I could really do with the alignment instructions has anyone got them out there? I've looked for a manual but they either want lots of $ (whatever they are :)) or the ones that are available don't have the circuit or alignment details :(( Also :) Are there any transfers or refurb material available I'd love to respray it but don't want to lose the original transfers or logo, any help very welcome from Ron G3YUH I've never worked on this particular radio, but I believe it's similiar to the S-40A, which I have. The bandspread cap must be fully open to align the radio. The bandspread dial might read "Set to zero for normal tuning". If so, it should be at zero with the bandspread cap fully opened. Both knobs should close it's respective tuning capacitor (lower frequency) when rotated counterclockwise. I mention that because the dial stringing diagram is incorrect on my service manual. The oscillator frequency is above the signal frequency on bands 1 - 3 and below it on band 4. The BoatAnchor Manual Archive has the service manual online: http://bama.sbc.edu/hallicra.htm So, how hot does that ballast resistor get? Frank Dresser |
"Ron" wrote in message ... Hi Frank thanks for the info, I wish Bama did have the manual but when I download what they say is the manual all I get is a couple of pages on replacing the ballast resister :(( from Ron.... The S-77 is described as the AC/DC version of the S-40B. The power supplies are the major differences, the alignment instructions should be the same. So, try downloading the S-40B manual, or any of the others from the S-40 series. Frank Dresser |
"Ron" wrote in message ... Hi Frank thanks for the info, I wish Bama did have the manual but when I download what they say is the manual all I get is a couple of pages on replacing the ballast resister :(( from Ron.... The S-77 is described as the AC/DC version of the S-40B. The power supplies are the major differences, the alignment instructions should be the same. So, try downloading the S-40B manual, or any of the others from the S-40 series. Frank Dresser |
"Ron" wrote Hi Frank thanks for the info, I wish Bama did have the manual but when I download what they say is the manual all I get is a couple of pages on replacing the ballast resister :(( from Ron.... *** The manual on Bama is 13 pages of good quality copy,I have just checked it. Brian Goldsmith. |
"Ron" wrote Hi Frank thanks for the info, I wish Bama did have the manual but when I download what they say is the manual all I get is a couple of pages on replacing the ballast resister :(( from Ron.... *** The manual on Bama is 13 pages of good quality copy,I have just checked it. Brian Goldsmith. |
Ron:
It's up there, all right, but it's in some whacky .djvu format, which some other docs up there are in as well; you need the right plug-in to make MSIE work with it, and MSIE, I think, is the only way you're going to be able to view it. It won't allow you to export the doc either, except as individual .BMP files. (Everyone always has to have a new format...sigh. Too bad they just couldn't stick with the standard .PDF file format...) I usually run Mozilla, and the plug-in just will not work with it at all; if you are running Netscape you might have problems too, as the rendering engine on Mozilla and Netscape are the same. I'll try and get it into a .PDF format; if I'm successful, I'll let you know. I may have to dump every page into a bitmap, and imprt that into Acrobat, which is pretty much the leading recognized electronic document format. -Lin/KJ6EF ================================================== == On Wed, 08 Oct 2003 09:25:12 GMT, (Ron) wrote: Hi This looks like a sensible news group! who but sensible people would want to repair and play with Old Knackered Radios :)) Being a lonely Brit trying to refurbish an old American Radio I'm a bit stuck, I have repaired the old girl and it works very well after sitting in a garage for many years as a home for spiders, But I can't seem to align it correctly in as much as I can't get the osc to track the dial reading and keep it in good spec across the band? also I'm a bit worried about the bandspread dial, it reads 100 with the tuning cap fully in this means as you go up from 0 to 100 you are going down in frequency? is this right? or has someone strung the dial cord incorrectly? do I align it with the bandspead cap fully meshed or not? I could really do with the alignment instructions has anyone got them out there? I've looked for a manual but they either want lots of $ (whatever they are :)) or the ones that are available don't have the circuit or alignment details :(( Also :) Are there any transfers or refurb material available I'd love to respray it but don't want to lose the original transfers or logo, any help very welcome from Ron G3YUH For email responses, remove "nospam_". |
Space Charge wrote:
I usually run Mozilla, and the plug-in just will not work with it at all; if you are running Netscape you might have problems too, as the rendering engine on Mozilla and Netscape are the same. I'm also using Mozilla (1.3) and have no problems with the browser plug-in. If you can't get it to fly, try the Solo viewer. It works independently from your browser and has lots more features anyway. You can download it here....bottom of page. http://www.tuberadio.it/utils.htm You can export the pages and get whatever format you prefer or print dump into a pdf creator (and watch the file size go way up). -Bill |
Space Charge wrote:
I usually run Mozilla, and the plug-in just will not work with it at all; if you are running Netscape you might have problems too, as the rendering engine on Mozilla and Netscape are the same. I'm also using Mozilla (1.3) and have no problems with the browser plug-in. If you can't get it to fly, try the Solo viewer. It works independently from your browser and has lots more features anyway. You can download it here....bottom of page. http://www.tuberadio.it/utils.htm You can export the pages and get whatever format you prefer or print dump into a pdf creator (and watch the file size go way up). -Bill |
On Wed, 08 Oct 2003 22:42:24 -0400, --exray-- wrote:
I'm also using Mozilla (1.3) and have no problems with the browser plug-in. Ah, the vagaries of software... If you can't get it to fly, try the Solo viewer. It works independently from your browser and has lots more features anyway. You can download it here....bottom of page. http://www.tuberadio.it/utils.htm You can export the pages and get whatever format you prefer or print dump into a pdf creator (and watch the file size go way up). -Bill Interesting! Will give it a try! Tnx! BTW, using Moz 1.0.2 here...so many code bana-peels to slip on in some of the later releases, I just held back upgrading for the last stable version at the time...might also be why the plug-in didn't install properly....who knows..in the Windows/OS/Bizzaro World, All Things Are Possible... ;) -Lin For email responses, remove "nospam_". |
On Wed, 08 Oct 2003 22:42:24 -0400, --exray-- wrote:
I'm also using Mozilla (1.3) and have no problems with the browser plug-in. Ah, the vagaries of software... If you can't get it to fly, try the Solo viewer. It works independently from your browser and has lots more features anyway. You can download it here....bottom of page. http://www.tuberadio.it/utils.htm You can export the pages and get whatever format you prefer or print dump into a pdf creator (and watch the file size go way up). -Bill Interesting! Will give it a try! Tnx! BTW, using Moz 1.0.2 here...so many code bana-peels to slip on in some of the later releases, I just held back upgrading for the last stable version at the time...might also be why the plug-in didn't install properly....who knows..in the Windows/OS/Bizzaro World, All Things Are Possible... ;) -Lin For email responses, remove "nospam_". |
Space Charge wrote:
BTW, using Moz 1.0.2 here...so many code bana-peels to slip on in some of the later releases, I just held back upgrading for the last stable version at the time...might also be why the plug-in didn't install properly....who knows..in the Windows/OS/Bizzaro World, All Things Are Possible... ;) -Lin Well, FWIW, although I use Mozilla it has done nothing to impress me. Same old bugs throughout the various versions. What hacks me off more is the attitude of the development group folks..."its a fault of your video card" and "why don't you rewrite it and correct the fault and submit it?". Nope, not ready for prime time. You don't have to be a Bill Gates fan to see how his company has cornered so much of the market. :-( -ex |
Space Charge wrote:
BTW, using Moz 1.0.2 here...so many code bana-peels to slip on in some of the later releases, I just held back upgrading for the last stable version at the time...might also be why the plug-in didn't install properly....who knows..in the Windows/OS/Bizzaro World, All Things Are Possible... ;) -Lin Well, FWIW, although I use Mozilla it has done nothing to impress me. Same old bugs throughout the various versions. What hacks me off more is the attitude of the development group folks..."its a fault of your video card" and "why don't you rewrite it and correct the fault and submit it?". Nope, not ready for prime time. You don't have to be a Bill Gates fan to see how his company has cornered so much of the market. :-( -ex |
Yep you are right again it was my plug in, it has some sort of bug in as much paging from 1 down it just circles round the first three pages? If I start from the last page up then I see the manual!! weird one. All ok on the old S-77 it is one fine receiver now that its realigned, I'm afraid I gave in and modified it slightly as it kept blowing the mains trip in my house, I've fitted a small mains transformer on the chassis above the smoothing cap and rewired the heaters to parrallel from serial and changed the audio and rect valves to 6.3 and it really is ace! I've left all the original wiring in place, nothing chopped out so it could easily be put back to original, thanks for all the help. from Ron g3yuh..... On Thu, 09 Oct 2003 00:07:53 GMT, "Brian Goldsmith" wrote: "Ron" wrote Hi Frank thanks for the info, I wish Bama did have the manual but when I download what they say is the manual all I get is a couple of pages on replacing the ballast resister :(( from Ron.... *** The manual on Bama is 13 pages of good quality copy,I have just checked it. Brian Goldsmith. |
Yep you are right again it was my plug in, it has some sort of bug in as much paging from 1 down it just circles round the first three pages? If I start from the last page up then I see the manual!! weird one. All ok on the old S-77 it is one fine receiver now that its realigned, I'm afraid I gave in and modified it slightly as it kept blowing the mains trip in my house, I've fitted a small mains transformer on the chassis above the smoothing cap and rewired the heaters to parrallel from serial and changed the audio and rect valves to 6.3 and it really is ace! I've left all the original wiring in place, nothing chopped out so it could easily be put back to original, thanks for all the help. from Ron g3yuh..... On Thu, 09 Oct 2003 00:07:53 GMT, "Brian Goldsmith" wrote: "Ron" wrote Hi Frank thanks for the info, I wish Bama did have the manual but when I download what they say is the manual all I get is a couple of pages on replacing the ballast resister :(( from Ron.... *** The manual on Bama is 13 pages of good quality copy,I have just checked it. Brian Goldsmith. |
Also whilst on the subject of refurbing these old beasts are there any new panel transfers available? so I could have the front and cabinet resprayed and re lettered? Like the Halicrafters logo and the red and white lettering I've seen new dials for the R1155 so maybe someone is producing these items? from Ron... On Wed, 08 Oct 2003 19:46:26 GMT, "Frank Dresser" wrote: "Ron" wrote in message ... Hi Frank thanks for the info, I wish Bama did have the manual but when I download what they say is the manual all I get is a couple of pages on replacing the ballast resister :(( from Ron.... The S-77 is described as the AC/DC version of the S-40B. The power supplies are the major differences, the alignment instructions should be the same. So, try downloading the S-40B manual, or any of the others from the S-40 series. Frank Dresser |
Also whilst on the subject of refurbing these old beasts are there any new panel transfers available? so I could have the front and cabinet resprayed and re lettered? Like the Halicrafters logo and the red and white lettering I've seen new dials for the R1155 so maybe someone is producing these items? from Ron... On Wed, 08 Oct 2003 19:46:26 GMT, "Frank Dresser" wrote: "Ron" wrote in message ... Hi Frank thanks for the info, I wish Bama did have the manual but when I download what they say is the manual all I get is a couple of pages on replacing the ballast resister :(( from Ron.... The S-77 is described as the AC/DC version of the S-40B. The power supplies are the major differences, the alignment instructions should be the same. So, try downloading the S-40B manual, or any of the others from the S-40 series. Frank Dresser |
Ron wrote:
Also whilst on the subject of refurbing these old beasts are there any new panel transfers available? so I could have the front and cabinet resprayed and re lettered? Like the Halicrafters logo and the red and white lettering I've seen new dials for the R1155 so maybe someone is producing these items? from Ron... RockSea Enterprises has the lettering for many of the Hallicrafters models. http://members.aol.com/RockSeaEnt/ -Bill |
Ron wrote:
Also whilst on the subject of refurbing these old beasts are there any new panel transfers available? so I could have the front and cabinet resprayed and re lettered? Like the Halicrafters logo and the red and white lettering I've seen new dials for the R1155 so maybe someone is producing these items? from Ron... RockSea Enterprises has the lettering for many of the Hallicrafters models. http://members.aol.com/RockSeaEnt/ -Bill |
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Hi Yes I had problems with both the setting of the dial and the tracking on Band 4 I think you have to accept a little variance but I'm very pleased with its performance and have been using it on 40mtrs CW alongside my Home Brew QRP CW Tx. Re The Transfers well in my searches I came across this http://www.lazertran.com/ If you read the Ink jet one it appears that you can print a design on this paper which become waterproof on drying and can then be cut out soaked and wet slide transfered on to any surface including paint or metal!! so you could I assume take a close up digi photo of any logo or decal, clean it up and print it ready for use, nice little niche market hi!!! thanks from Ron... On 10 Oct 2003 17:50:17 GMT, donutbandit wrote: (Ron) wrote in : Are there any transfers or refurb material available I'd love to respray it but don't want to lose the original transfers or logo, any help very welcome You won't find any specific to the S-77. |
Hi Yes I had problems with both the setting of the dial and the tracking on Band 4 I think you have to accept a little variance but I'm very pleased with its performance and have been using it on 40mtrs CW alongside my Home Brew QRP CW Tx. Re The Transfers well in my searches I came across this http://www.lazertran.com/ If you read the Ink jet one it appears that you can print a design on this paper which become waterproof on drying and can then be cut out soaked and wet slide transfered on to any surface including paint or metal!! so you could I assume take a close up digi photo of any logo or decal, clean it up and print it ready for use, nice little niche market hi!!! thanks from Ron... On 10 Oct 2003 17:50:17 GMT, donutbandit wrote: (Ron) wrote in : Are there any transfers or refurb material available I'd love to respray it but don't want to lose the original transfers or logo, any help very welcome You won't find any specific to the S-77. |
Ron wrote:
Re The Transfers well in my searches I came across this http://www.lazertran.com/ If you read the Ink jet one it appears that you can print a design on this paper which become waterproof on drying and can then be cut out soaked and wet slide transfered on to any surface including paint or metal!! so you could I assume take a close up digi photo of any logo or decal, clean it up and print it ready for use, nice little niche market hi!!! thanks from Ron... If the decals from RockSea aren't complete enough, drop Mike a line and I'm sure he'll be happy to add any missing words. He posted here some while back before jumping into Halli decals looking for all the various words, etc used on the sets. If you want to DIY your own decals thats easy enough. A font that is VERY close to the Hallicrafters font is named CHANL and you should be able to find it on the web. Waterslide decals via your own printer are great but inkjets are at the bottom of the heap for producing a decal that works on a dark background because of the inherent transparency in the ink. Laser Jet is better, ALPS dry transfer is perfect and your local copy store is great with their $30k machines if you bring along the decal paper stock...about $1 per sheet. -Bill M |
Ron wrote:
Re The Transfers well in my searches I came across this http://www.lazertran.com/ If you read the Ink jet one it appears that you can print a design on this paper which become waterproof on drying and can then be cut out soaked and wet slide transfered on to any surface including paint or metal!! so you could I assume take a close up digi photo of any logo or decal, clean it up and print it ready for use, nice little niche market hi!!! thanks from Ron... If the decals from RockSea aren't complete enough, drop Mike a line and I'm sure he'll be happy to add any missing words. He posted here some while back before jumping into Halli decals looking for all the various words, etc used on the sets. If you want to DIY your own decals thats easy enough. A font that is VERY close to the Hallicrafters font is named CHANL and you should be able to find it on the web. Waterslide decals via your own printer are great but inkjets are at the bottom of the heap for producing a decal that works on a dark background because of the inherent transparency in the ink. Laser Jet is better, ALPS dry transfer is perfect and your local copy store is great with their $30k machines if you bring along the decal paper stock...about $1 per sheet. -Bill M |
"Ron" wrote in message ... Hi Yes I had problems with both the setting of the dial and the tracking on Band 4 I think you have to accept a little variance but I'm very pleased with its performance and have been using it on 40mtrs CW alongside my Home Brew QRP CW Tx. I got my S-40A in perfect band 4 alignment at 2 points (17 and 34 Mc), but it wasn't easy. I had to remove the band 4 oscillator coil and spread the turns. Actually, I ended up rewinding the coil because I messed up the original. I overworked the coil because I didn't realize the importance of lead dress on this radio, even at 17 Mc. There's a longish wire coming from the bandswitch which should be routed under the capacitor shelf on the coil form. Routing it over the top of the form cost me about 250 Kc. That's about half of the range from the tuning slug. If you don't get enough range with the ferrite slug, the radio books say you can try a brass slug. I didn't have a brass slug, and I don't have the brass rod to make one. In one of my experiments, I coiled some 16 gauge copper wire around the shank of a phillips head screwdriver, and threaded the coil into the form. If you've ever worked with Heli-Coil thread inserts, you can picture what I did. The copper coil worked fine, but I got the radio aligned with the ferrite slug, once I rewound the coil for a little less inductance. Also, good clean connections at the bandswitch and the solder joints are important. Band 4 is a high C low L circuit, and should generate a fair amount of current in the LC tank assuming a reasonable Q. You can clean the bandswitch better if you remove the two screws which hold the witch detent in place. You can then rock the switch past the postition the contacts stop for band 4. This will work any contact cleaner in better, and work out the crud which normally builds up where the switch dead ends. It's strange this radio goes into the low VHF band. I think Hallicrafters designed it with the experimental Apex radio band in mind, which ran from about 40 to 45 Mc. Frank Dresser |
"Ron" wrote in message ... Hi Yes I had problems with both the setting of the dial and the tracking on Band 4 I think you have to accept a little variance but I'm very pleased with its performance and have been using it on 40mtrs CW alongside my Home Brew QRP CW Tx. I got my S-40A in perfect band 4 alignment at 2 points (17 and 34 Mc), but it wasn't easy. I had to remove the band 4 oscillator coil and spread the turns. Actually, I ended up rewinding the coil because I messed up the original. I overworked the coil because I didn't realize the importance of lead dress on this radio, even at 17 Mc. There's a longish wire coming from the bandswitch which should be routed under the capacitor shelf on the coil form. Routing it over the top of the form cost me about 250 Kc. That's about half of the range from the tuning slug. If you don't get enough range with the ferrite slug, the radio books say you can try a brass slug. I didn't have a brass slug, and I don't have the brass rod to make one. In one of my experiments, I coiled some 16 gauge copper wire around the shank of a phillips head screwdriver, and threaded the coil into the form. If you've ever worked with Heli-Coil thread inserts, you can picture what I did. The copper coil worked fine, but I got the radio aligned with the ferrite slug, once I rewound the coil for a little less inductance. Also, good clean connections at the bandswitch and the solder joints are important. Band 4 is a high C low L circuit, and should generate a fair amount of current in the LC tank assuming a reasonable Q. You can clean the bandswitch better if you remove the two screws which hold the witch detent in place. You can then rock the switch past the postition the contacts stop for band 4. This will work any contact cleaner in better, and work out the crud which normally builds up where the switch dead ends. It's strange this radio goes into the low VHF band. I think Hallicrafters designed it with the experimental Apex radio band in mind, which ran from about 40 to 45 Mc. Frank Dresser |
Quote:
Knobtwiddler |
Quote:
Comes with Windows XP Pro Knobtwiddler |
OOPS “Agency FB” is the EXACT match to the hallicrafters font.
NOT Agency SB knobtwiddler Quote:
NOT Agency SB knobtwiddler |
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