|
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. |
| All times are GMT +1. The time now is 01:41 PM. |
Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
RadioBanter.com