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Drake R4-C antenna connector question
Hi all, my name is Ted (KQ4MZ) and I just came into posession of a
Drake R4-C receiver which I intend to build a Drake station from. For now I just plan to use this as an extra receiver. My question is how can I connect a coax to the antenna jack on the back of the receiver? I have never owned any older tube gear aside from old swl radios and have never seen a phono plug type jack for an antenna. Can I solder the center conductor of the coax to the pin on a male phono plug and the braid to the body of the plug? Any help would be most appreciated. I want to be able to connect the Drake into an antenna switch that I have all my other rigs connected to . Thanks again for any and all thoughts. Ted---KQ4MZ |
Drake R4-C antenna connector question
On Mon, 20 Nov 2006 03:48:19 GMT, "Richard Knoppow"
wrote: Pomona Plugs and others make adaptors to go from male or female phone or RCA plugs to BNC or F connectors. He said phono plug, not phone plug. They're two different beasts. You can also get PL-259 to phono adapters, which might be a better solution than using BNC. -- Larry |
Drake R4-C antenna connector question
"pltrgyst" wrote in message ... On Mon, 20 Nov 2006 03:48:19 GMT, "Richard Knoppow" wrote: Pomona Plugs and others make adaptors to go from male or female phone or RCA plugs to BNC or F connectors. He said phono plug, not phone plug. They're two different beasts. You can also get PL-259 to phono adapters, which might be a better solution than using BNC. -- Larry Typing error, calling it an RCA plug should have been the clue. The info above stands for phono plugs, all sorts of adaptors are available for them. Even Radio Shack has some. I mentioned the BNC because it is small and less likely than a PL-259 to stress the RCA jack its connected to. Since this is for a receiver antenna the cable can be of a light weight type. The other end can have a PL-259 or whatever is desired on it. -- --- Richard Knoppow Los Angeles, CA, USA |
Drake R4-C antenna connector question
"tjbitt" wrote in message
oups.com... Hi all, my name is Ted (KQ4MZ) and I just came into posession of a Drake R4-C receiver which I intend to build a Drake station from. For now I just plan to use this as an extra receiver. My question is how can I connect a coax to the antenna jack on the back of the receiver? I have never owned any older tube gear aside from old swl radios and have never seen a phono plug type jack for an antenna. Can I solder the center conductor of the coax to the pin on a male phono plug and the braid to the body of the plug? Any help would be most appreciated. I want to be able to connect the Drake into an antenna switch that I have all my other rigs connected to . Thanks again for any and all thoughts. Ted---KQ4MZ Ted - The usage of Phono (RCA) jack for RECEIVERS and some QRP transceivers was very common in 1950s -- 1980s --- Collins S-Line, Heathkit and Drake. I own a Drake R-4C --- that I acquired from an estate earlier this year This unit has required a significant amount of "clean-up" which I am still doing -- it was a daily user radio and owner appears to have been a smoker. RECOMMEND: 1. BUILD a small (~ 3 feet) coax patch cable (RG-58-U) or 8X with a phono (RCA) jack -- one end to connect to Drake R-4C and the connector used for your antenna switch on the other. IF you don't have these skills -- most amateur radio service departments and Cable-X-Perts are happy to build this for you. 2. DO NOT hack or try to change that Drake R-4C connector. The phono jack field -- this 6 in-line phono connectors on a phenolic board on back panel - is UNOBTAINIUM. I have personally talked to both H.H. Smith and Switchcraft -- damage that -- and you would have to fabricate an entire replacement. 2A. I actually had to disassemble and repair the antenna and speaker jacks in that field last week --- the former owner had damaged the connectors. 2 hours of labor and some MAAS metal cleaning polish and these 2 jacks are almost back to factory new -- I was lucky the damage was not more extensive. You should have jumpers for the MUTE, PTO Lamp on back panel and a jumper for 7-pin socket inside (if you have no noise blanker installed). Greg, w9gb |
Drake R4-C antenna connector question
Thanks for the suggestions. I ordred an rca adapter plug today. Do I
need the jumpers for mute PTO lamp etc if I'm using the R4C as a receiver only ---no connection to transmitter? Hate to be a dummy but these older radios are completely new to me. Thanks agn for the help---Ted --KQ4MZ w9gb wrote: "tjbitt" wrote in message oups.com... Hi all, my name is Ted (KQ4MZ) and I just came into posession of a Drake R4-C receiver which I intend to build a Drake station from. For now I just plan to use this as an extra receiver. My question is how can I connect a coax to the antenna jack on the back of the receiver? I have never owned any older tube gear aside from old swl radios and have never seen a phono plug type jack for an antenna. Can I solder the center conductor of the coax to the pin on a male phono plug and the braid to the body of the plug? Any help would be most appreciated. I want to be able to connect the Drake into an antenna switch that I have all my other rigs connected to . Thanks again for any and all thoughts. Ted---KQ4MZ Ted - The usage of Phono (RCA) jack for RECEIVERS and some QRP transceivers was very common in 1950s -- 1980s --- Collins S-Line, Heathkit and Drake. I own a Drake R-4C --- that I acquired from an estate earlier this year This unit has required a significant amount of "clean-up" which I am still doing -- it was a daily user radio and owner appears to have been a smoker. RECOMMEND: 1. BUILD a small (~ 3 feet) coax patch cable (RG-58-U) or 8X with a phono (RCA) jack -- one end to connect to Drake R-4C and the connector used for your antenna switch on the other. IF you don't have these skills -- most amateur radio service departments and Cable-X-Perts are happy to build this for you. 2. DO NOT hack or try to change that Drake R-4C connector. The phono jack field -- this 6 in-line phono connectors on a phenolic board on back panel - is UNOBTAINIUM. I have personally talked to both H.H. Smith and Switchcraft -- damage that -- and you would have to fabricate an entire replacement. 2A. I actually had to disassemble and repair the antenna and speaker jacks in that field last week --- the former owner had damaged the connectors. 2 hours of labor and some MAAS metal cleaning polish and these 2 jacks are almost back to factory new -- I was lucky the damage was not more extensive. You should have jumpers for the MUTE, PTO Lamp on back panel and a jumper for 7-pin socket inside (if you have no noise blanker installed). Greg, w9gb |
Drake R4-C antenna connector question
tjbitt wrote:
Thanks for the suggestions. I ordred an rca adapter plug today. Do I need the jumpers for mute PTO lamp etc if I'm using the R4C as a receiver only ---no connection to transmitter? Hate to be a dummy but these older radios are completely new to me. Thanks agn for the help---Ted --KQ4MZ Hi Ted, One note, on some of these radios there isn't enough room on the inside of the chassis for the long center pin (eg. original) RCA phono plug to fit. I don't know if the Drake is in this group. You should take a peek inside the chassis, and see if a protruding pin will get too close to anything. If you do find this to be the case, you can easily fix the problem with a pair of diagonal cutters. Basically, you crimp the center pin with the cutters a little bit, and rotate a few degrees, and do it again. Just a little at a time, until the excess pin drops off. This rolls the end over like the original, and makes soldering easier. -Chuck |
Drake R4-C antenna connector question
Richard Knoppow wrote:
Surprizingly, RCA conectors are pretty good at RF, in fact, that is what they were originally designed for, they just are not mechanically strong. RCA connectors were designed to be cheap. Yes, they were intended for internal connections (both RF and audio) in radio/phonograph consoles in the thirties, but that's not to say they are constant impedance in any way. If you see an RCA connector on an antenna input, you can _probably_ assume it wants to see a high-impedance longwire antenna. You may get better results from a 50 ohm source with some matching. Then again, maybe not. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
Drake R4-C antenna connector question
"Scott Dorsey" wrote in message ... . If you see an RCA connector on an antenna input, you can _probably_ assume it wants to see a high-impedance longwire antenna. You may get better results from a 50 ohm source with some matching. Then again, maybe not. --scott Never saw this before. Drake, Collins and Heathkit all used the RCA phono socket for low impedance antennas. The recievers that are 600 Ohms or so used a terminal strip. There may be exceptions, but that's what they are- exceptions. Dale W4OP |
Drake R4-C antenna connector question
"tjbitt" wrote in message oups.com... Hi all, my name is Ted (KQ4MZ) and I just came into posession of a Drake R4-C receiver which I intend to build a Drake station from. For now I just plan to use this as an extra receiver. My question is how can I connect a coax to the antenna jack on the back of the receiver? I have never owned any older tube gear aside from old swl radios and have never seen a phono plug type jack for an antenna. Can I solder the center conductor of the coax to the pin on a male phono plug and the braid to the body of the plug? Any help would be most appreciated. I want to be able to connect the Drake into an antenna switch that I have all my other rigs connected to . Thanks again for any and all thoughts. Ted---KQ4MZ Ted, do you have a manual for this thing. If not there is one on-line at: http://bama.edebris.com/manuals/drake/r4c/ Probably pretty low res. There may be a better one somewhere, a Google search should find it. -- --- Richard Knoppow Los Angeles, CA, USA |
Drake R4-C antenna connector question
"Chuck Harris" wrote in message
... tjbitt wrote: Thanks for the suggestions. I ordred an RCA (phono) adapter plug today. Do I need the jumpers for mute PTO lamp etc if I'm using the R4C as a receiver only ---no connection to transmitter? Hate to be a dummy but these older radios are completely new to me. Thanks agn for the help---Ted --KQ4MZ Hi Ted, One note, on some of these radios there isn't enough room on the inside of the chassis for the long center pin (eg. original) RCA phono plug to fit. I don't know if the Drake is in this group. You should take a peek inside the chassis, and see if a protruding pin will get too close to anything. If you do find this to be the case, you can easily fix the problem with a pair of diagonal cutters. Basically, you crimp the center pin with the cutters a little bit, and rotate a few degrees, and do it again. Just a little at a time, until the excess pin drops off. This rolls the end over like the original, and makes soldering easier. -Chuck Ted - In addition to Chuck's suggestion -- you will find that SOME of the phono (RCA) to BNC adapters are a "bit wide" and crowd the phono jack for the Speaker. I have 2 and I use the narrow one on the Drake R-4C. ==== To answer your other 2 questions. I also operate my Drake R-4C as a stand alone receiver. The MUTE and PTO lamp jumpers are needed -- when the receiver is NOT paired with the matching Drake TX-4C. The MUTE is "open" when the TX-4C transmits and closed on receiver (hence the need for the jumper). PTO Lamp is "open" when the TX-4C PTO is being used and closed when the R-4C PTO is being used --- in a transceive configuration. Now, you will find some operators solder a wire jumper inside the receiver (a practice I discourage -- and had to remove from this estate item). These jumpers are very easy to make. I use a blank RCA plug - solder a wire to center pin then wrap other end around the location designated for shield or other conductor -- very neat. ==== Lastly, you also need the jumper plug in the noise blanker socket -- IF it is not present. Again, the OM that had this receiver before me soldered the jumper to the bottom of that socket (bad form). You have two options for the 7 pin plug. You can purchase Don Garrett's (WA9TGT) solution http://www.wa9tgt.com/Drake_R4C_4NB_Plug.html OR purchase a 7-pin plug with screw on back from Leed's Radio (Brooklyn, NY) and wire the 2 jumpers inside that plug. 7-pin miniature plug - Fits sockets for 1L6, 6AU6 etc good for making tube adapters and test jigs with screw on back shell - NOS $4.00 http://www.leedselect.com/parts-sockets.html New Drake blue filters? http://www.wa9tgt.com/Dial_Filter_Page.html or very well stocked hobby shops in .01 and .02 plastic sheets http://www.midwestproducts.com/catal...d=19&sa2_id=21 w9gb |
Drake R4-C antenna connector question
"Scott Dorsey" wrote in message
... Richard Knoppow wrote: Surprizingly, RCA conectors are pretty good at RF, in fact, that is what they were originally designed for, they just are not mechanically strong. RCA connectors were designed to be cheap. Yes, they were intended for internal connections (both RF and audio) in radio/phonograph consoles in the thirties, but that's not to say they are constant impedance in any way. If you see an RCA connector on an antenna input, you can _probably_ assume it wants to see a high-impedance longwire antenna. You may get better results from a 50 ohm source with some matching. Then again, maybe not. --scott Scott - Where is the empirical or engineering data to support this conclusion? Collins did do the frequency sweeps -- and it out performed many of the alternatives at that time -- if it didn't Art Collins would have never used the connector (BNC was available at the time). w9gb |
Drake R4-C antenna connector question
On 11/20/06 2:15 PM, in article fOp8h.3560$9e.927@trnddc02, "Dale Parfitt"
wrote: "Scott Dorsey" wrote in message ... . If you see an RCA connector on an antenna input, you can _probably_ assume it wants to see a high-impedance longwire antenna. You may get better results from a 50 ohm source with some matching. Then again, maybe not. --scott Never saw this before. Drake, Collins and Heathkit all used the RCA phono socket for low impedance antennas. The recievers that are 600 Ohms or so used a terminal strip. There may be exceptions, but that's what they are- exceptions. Dale W4OP It appears the unit may have trouble as a receiver. According to the record on BAMA an R4-C is a "remote VFO." Don |
Drake R4-C antenna connector question
"tjbitt" wrote in message
oups.com... Thanks for the suggestions. I ordred an rca adapter plug today. Do I need the jumpers for mute PTO lamp etc if I'm using the R4C as a receiver only ---no connection to transmitter? Hate to be a dummy but these older radios are completely new to me. Thanks agn for the help---Ted --KQ4MZ I would get a good copy of the manual you need - Bob Sherwood has good copies as well as a couple of the other manual suppliers (be selective). BTW, there were 4 major changes during the Drake R-4C production run. Wayne Montague, VE3EFJ compiled this information (below) and believes it to be accurate, BUT not necessarily a complete dossier on the Drake R-4C changes over its entire production run. This is his latest update. a.. R-4C ser no above 16121 Revision date - Feb 1973 All mixer tubes 6HS6. First and 3rd mixers cathode injected. Second mixer is a dual gate MOSFET. The IF chain following the first crys- tal filter is 6BA6 1st IF, Noise blanker and then 2nd mixer. 4 posi- tion filter select. b.. R-4C ser no above 18726 Revision date - March 1974 All mixer tubes 6HS6. First and 3rd mixers cathode injected. Second mixer is a 6BE6 with a JFET (2N5949) buffer. 5 position crystal filter selection. 3 diodes in series across the S Meter to compress the meter range. 2 S Meter zero pots were employed - one internal and one external. c.. R-4C ser no above 21000 Revision date - Nov 1974 All mixer tubes 6EJ7. First and 3rd mixers grid injected. Second mixer is a 6BE6 with an JFET (2N5950) buffer. 5 position crystal filter selection. Some intermediate models in this transition period may not have installed the new tapped IF transformer, T7C. d.. R-4C ser no above 25900 Revision date - Jan 1976 All mixer tubes 6EJ7. First and 3rd mixers grid injected. Second mixer is a 6BE6 with an JFET (2N5950) buffer. 5 position crystal filter selection. T7C IF transformer. Very little electronic difference to the above model except a 125 volt zener diode at the junction of R12 and R13 (regulated B+ to the plate of the 6BE6 mixer). This could be the latest model in the series before production was halted. From the schematic, the differences between this model and the 21000 previous is little. |
Drake R4-C antenna connector question
"Don Bowey" wrote in message
... On 11/20/06 2:15 PM, in article fOp8h.3560$9e.927@trnddc02, "Dale Parfitt" wrote: "Scott Dorsey" wrote in message ... . If you see an RCA connector on an antenna input, you can _probably_ assume it wants to see a high-impedance longwire antenna. You may get better results from a 50 ohm source with some matching. Then again, maybe not. --scott Never saw this before. Drake, Collins and Heathkit all used the RCA phono socket for low impedance antennas. The recievers that are 600 Ohms or so used a terminal strip. There may be exceptions, but that's what they are- exceptions. Dale W4OP It appears the unit may have trouble as a receiver. According to the record on BAMA an R4-C is a "remote VFO." Don NOPE, typo at BAMA (someone left out a 'V'). The Drake RV-4C is the external VFO; the Drake R-4C is the HF receiver. gb |
Drake R4-C antenna connector question
w9gb wrote:
"Scott Dorsey" wrote in message ... Richard Knoppow wrote: Surprizingly, RCA conectors are pretty good at RF, in fact, that is what they were originally designed for, they just are not mechanically strong. RCA connectors were designed to be cheap. Yes, they were intended for internal connections (both RF and audio) in radio/phonograph consoles in the thirties, but that's not to say they are constant impedance in any way. If you see an RCA connector on an antenna input, you can _probably_ assume it wants to see a high-impedance longwire antenna. You may get better results from a 50 ohm source with some matching. Then again, maybe not. --scott Scott - Where is the empirical or engineering data to support this conclusion? Collins did do the frequency sweeps -- and it out performed many of the alternatives at that time -- if it didn't Art Collins would have never used the connector (BNC was available at the time). w9gb Say, didn't the Heathkit "lunchbox" AM transceivers use RCA phono connectors as an antenna conection? Those lunchboxes operated into low impedance 50 ohm loads all the way up to 148 mcs. K9FH -- Important note: When replying to my e-mail please delete the words, "nospam" and ".gov" from my e-mail address. |
Drake R-4C MANUAL
"tjbitt" wrote in message
oups.com... Hi all, my name is Ted (KQ4MZ) and I just came into posession of a Drake R4-C receiver which I intend to build a Drake station from. For now I just plan to use this as an extra receiver. My question is how can I connect a coax to the antenna jack on the back of the receiver? I have never owned any older tube gear aside from old swl radios and have never seen a phono plug type jack for an antenna. Can I solder the center conductor of the coax to the pin on a male phono plug and the braid to the body of the plug? Any help would be most appreciated. I want to be able to connect the Drake into an antenna switch that I have all my other rigs connected to . Thanks again for any and all thoughts. Ted---KQ4MZ Ted, Adobe Acrobat of the manual is available from N2CKH http://www.n2ckh.com/library.htm w9gb |
Drake R-4C MANUAL
Thanks to everyone for all the suggestions. I ordered a phono plug
adapter from Universal Radio, downloaded a manual from BAMA, ordered a 7-pin adapter from Don Garrett and scrounged some wire and phono plugs to make the jumpers. Hopefully this should give me something to do over the holidays. Looking forward to getting this rig fired up. I also scronged a 3.2 ohm motorola speaker from an old police unit which should work fine as speaker. Thanks again and Hppy Holidays!!--Ted --KQ4MZ w9gb wrote: "tjbitt" wrote in message oups.com... Hi all, my name is Ted (KQ4MZ) and I just came into posession of a Drake R4-C receiver which I intend to build a Drake station from. For now I just plan to use this as an extra receiver. My question is how can I connect a coax to the antenna jack on the back of the receiver? I have never owned any older tube gear aside from old swl radios and have never seen a phono plug type jack for an antenna. Can I solder the center conductor of the coax to the pin on a male phono plug and the braid to the body of the plug? Any help would be most appreciated. I want to be able to connect the Drake into an antenna switch that I have all my other rigs connected to . Thanks again for any and all thoughts. Ted---KQ4MZ Ted, Adobe Acrobat of the manual is available from N2CKH http://www.n2ckh.com/library.htm w9gb |
Drake R-4C MANUAL
"tjbitt" wrote in message
oups.com... Thanks to everyone for all the suggestions. I ordered a phono plug adapter from Universal Radio, downloaded a manual from BAMA, ordered a 7-pin adapter from Don Garrett and scrounged some wire and phono plugs to make the jumpers. Hopefully this should give me something to do over the holidays. Looking forward to getting this rig fired up. I also scronged a 3.2 ohm motorola speaker from an old police unit which should work fine as speaker. Thanks again and Happy Holidays!! --Ted --KQ4MZ Ted -- I am using an old metal Motorola speaker (circa 1961 - gray and black - 5 years younger than me) in very good condition on my Drake R-4C -- it sounds very good. The rubber on these old cords are brittle -- so I replaced it with new 18-2 lamp cord (black) from the local hardware store (Ace). Reinstalled the Heyco strain relief, put a new Switchcraft phono (RCA) plug on the end of cord and hooked it up ! Greg -- w9gb |
Drake R4-C antenna connector question
It should be stated that the PL-259, a favorite of the ham world, is not a
constant impedance, either. Some hams go nuts if they see you use one of those on 2 meters or higher. However, it is simple enough to calculate the impedance bump at a particular frequency simply by determining the impedance (using the ratio of diameters and the length of the connection), then determining what that bump is at a particular frequency. I did that once, to show a friend that he should not lose sleep over the connector. It is like inserting a 1" length of 75 ohm coax in a 50 ohm line. Remember that 50 ohm coax is not necessarily 50 ohms. It is a nominal impedance, which means it might be 50 ohms, or 52 ohms or even 53 ohms. So, if you are worried about the connector, you should measure the coax to see what impedance you really want. RCA and GE both used RCA connectors (commonly called phono plugs) at 450 MHz. Colin K7FM |
Drake R4-C antenna connector question
BAP wrote:
Where is the empirical or engineering data to support this conclusion? Collins did do the frequency sweeps -- and it out performed many of the alternatives at that time -- if it didn't Art Collins would have never used the connector (BNC was available at the time). Look at it as a simple tube... look at the outside diameter of the shield and the inside diameter of the center conductor and plug and chug using the formulae in the ITT Radio Engineer's Handbook for coaxial conductors. You get something around 95 ohms characteristic for the front part of the connector (from the insulator forward). The back part of the connector is less important but ou have an additional discontinuity from the ring around the insulator. Say, didn't the Heathkit "lunchbox" AM transceivers use RCA phono connectors as an antenna conection? Those lunchboxes operated into low impedance 50 ohm loads all the way up to 148 mcs. Yup! And the truth is, you can away with pretty lousy connectors in most antenna applications. But put a pulse generator and a scope in place of the transmitter and you'll see discontinuities at the connector points. --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
Drake R4-C antenna connector question
COLIN LAMB wrote:
It should be stated that the PL-259, a favorite of the ham world, is not a constant impedance, either. Some hams go nuts if they see you use one of those on 2 meters or higher. However, it is simple enough to calculate the impedance bump at a particular frequency simply by determining the impedance (using the ratio of diameters and the length of the connection), then determining what that bump is at a particular frequency. PL-259 _is_ constant impedance, it's just not exactly 50 ohms. But it's closer to 50 ohms than the RCA is. I did that once, to show a friend that he should not lose sleep over the connector. It is like inserting a 1" length of 75 ohm coax in a 50 ohm line. Remember that 50 ohm coax is not necessarily 50 ohms. It is a nominal impedance, which means it might be 50 ohms, or 52 ohms or even 53 ohms. So, if you are worried about the connector, you should measure the coax to see what impedance you really want. Not to mention measuring the antenna! But with coax, the number in the manufacturer's catalogue is probably correct (but in a lot of cases it is NOT the same as the number in the Radio Guide!) --scott -- "C'est un Nagra. C'est suisse, et tres, tres precis." |
Drake R4-C antenna connector question
"Scott Dorsey" wrote in message ... BAP wrote: Where is the empirical or engineering data to support this conclusion? Collins did do the frequency sweeps -- and it out performed many of the alternatives at that time -- if it didn't Art Collins would have never used the connector (BNC was available at the time). Look at it as a simple tube... look at the outside diameter of the shield and the inside diameter of the center conductor and plug and chug using the formulae in the ITT Radio Engineer's Handbook for coaxial conductors. You get something around 95 ohms characteristic for the front part of the connector (from the insulator forward). The back part of the connector is less important but ou have an additional discontinuity from the ring around the insulator. Say, didn't the Heathkit "lunchbox" AM transceivers use RCA phono connectors as an antenna conection? Those lunchboxes operated into low impedance 50 ohm loads all the way up to 148 mcs. Yup! And the truth is, you can away with pretty lousy connectors in most antenna applications. But put a pulse generator and a scope in place of the transmitter and you'll see discontinuities at the connector points. --scott This is undubtedly true- also for type UHF or type F. But why is a contant impedance connector important for an antenna input at HF? Or anywhere in an HF receiver? Even in a critical mixer application optimized for 50 Ohms, the small discontinuity at HF from an RCA plug is of no real world concern. Dale W4OP |
Drake R4-C antenna connector question
"Dale Parfitt" wrote in message
news:fNF8h.4412$9e.3072@trnddc02... This is undubtedly true- also for type UHF or type F. But why is a contant impedance connector important for an antenna input at HF? Or anywhere in an HF receiver? Even in a critical mixer application optimized for 50 Ohms, the small discontinuity at HF from an RCA plug is of no real world concern. Dale W4OP .... go up in frequency to land-mobile VHF and UHF and look at what GE and Motorola used for the optional pre-amps -- RCA (phono) jacks and plugs. This gets covered about every 18 months or so on the Collins list as newcomers -- make these pronouncements. I like the audio hobby with $ 40 Cardias caps for RCA jacks. http://www.cardas.com/content.php?ar...&product_id=29 Now there is a method to make money totally through marketing. http://www.cardas.com/content.php?ar...l e+Materials w9gb |
Drake R4-C antenna connector question
And those people actually believe this bovine effluence?
w9gb wrote: I like the audio hobby with $ 40 Cardias caps for RCA jacks. http://www.cardas.com/content.php?ar...&product_id=29 Now there is a method to make money totally through marketing. http://www.cardas.com/content.php?ar...l e+Materials w9gb |
Drake R4-C antenna connector question
On Wed, 22 Nov 2006 07:27:09 -0500, K3HVG wrote in :
And those people actually believe this bovine effluence? w9gb wrote: I like the audio hobby with $ 40 Cardias caps for RCA jacks. http://www.cardas.com/content.php?ar...&product_id=29 Now there is a method to make money totally through marketing. http://www.cardas.com/content.php?ar...l e+Materials Oh, _yeah_! I'm mildly tempted to sell a 3-wire power-grade equivalent of open-wire line, with ceramic insulators, for the betterment of my pocketbook at the expense of the audioph00ls. Make it out of #6 AWG solid copper, with an insulator every 6 inches or so, and market it as having carefully- controlled impedance at power-line frequencies. Yeah, that'd work -- and buzzwordifying the ad copy would only improve the sales. BA relevance: #6 AWG solid copper makes _sturdy_ Moxon rectangles at 2m and 6m, though it's a bit big. At 140 cm and 70 cm, #8 or #10 are a bit easier to work with. -- Segovia on his hatred of routine playing: I have to be present at every note I play. |
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