[drakelist] Dumbish Question
Hi all, Sorry for such a basic question, but I've been wondering why Drake made both a transceiver (TR-4C) and a receiver/transmitter pair (R-4C + T-4XC) in the same line. Did the separate receiver/transmitter pair offer better performance than the transceiver in some way? I would appreciate a little background on why they offered all three units. Thanks... 73, Dave / K8JDC (who is talking about C-line equipment but really has designs on adding a TR-7 to his shack some day)
Re: [drakelist] Dumbish Question
[EMAIL PROTECTED] made an utterance to the drakelist gang -- The C-line allowed split operation and to do this with the TR-7 required the external RV-4 VFO or the later TR-4C with RIT. C-line enabled cross band operation. C-line operated 160 meters. C-line could be used to listen on shortwave, used on WARC bands, etc. R4C could be used for shortwave listening without having to power up the transmitter. TR-4C had more output in case somebody wanted to avoid using a linear. etc. etc. **Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom000301) -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Dumbish Question
The separates also have: Selectable IF filters (if you populate the optional positions) Notch filter 3 selectable AGC time constants (and Off) The potential of a superior receiver (according to the modifications and measurements from Rob Sherwood - and others) Dave VE6DRW - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, March 22, 2008 6:49 AM Subject: Re: [drakelist] Dumbish Question [EMAIL PROTECTED] made an utterance to the drakelist gang -- The C-line allowed split operation and to do this with the TR-7 required the external RV-4 VFO or the later TR-4C with RIT. C-line enabled cross band operation. C-line operated 160 meters. C-line could be used to listen on shortwave, used on WARC bands, etc. R4C could be used for shortwave listening without having to power up the transmitter. TR-4C had more output in case somebody wanted to avoid using a linear. etc. etc. **Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom000301)-- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] Dumbish Question
Hi, most importantly the receiver, R4C, had the provisions for additional filter options both AM, SSB and CW. The TR4C later came out with the TR4CW which had a narrow CW filter built in. This transeiver was mainly a SSB unit until then. Another plus of the R4C was variable pass band tuning (PSB) as well as a notch filter. Neither of these were in the TR4C or any later versions. Both the R4C and TR4C had fairly hot receivers. Many hold that the R4C did not reach its potential until it was filtered up, had the optional noise blanker installed, and had the later sherwood mods performed. Most active hams prefer the R4B (B'line) where the package is pretty well complete. The R4C's are, however, newer units and did not have the copper plated chassis. Many hams today believe the R4C with sherwood mods is still competitive with ANY modern receiver/transciever. See the sherwood site for more information Output differed from the two units. The T4xc had two output tubes for nominally 120w output. The Tr4c had three output tubes for nominally 180w output on the lower bands. Add to this the comments from K9SQG and you pretty well have it. Also, simply google up Drake radios and you'll find a wealth of information. David Wd9cmd - Original Message - From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, March 22, 2008 8:49 AM Subject: Re: [drakelist] Dumbish Question [EMAIL PROTECTED] made an utterance to the drakelist gang -- The C-line allowed split operation and to do this with the TR-7 required the external RV-4 VFO or the later TR-4C with RIT. C-line enabled cross band operation. C-line operated 160 meters. C-line could be used to listen on shortwave, used on WARC bands, etc. R4C could be used for shortwave listening without having to power up the transmitter. TR-4C had more output in case somebody wanted to avoid using a linear. etc. etc. **Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom000301)-- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
[drakelist] T-4X R-4A zerobeat
Howard Traxler [EMAIL PROTECTED] made an utterance to the drakelist gang -- In case this question didn't get to the right person, allow me to ask again: I have a T-4X and R-4A that are not zerobeat when I use them in tranceive mode. From many years ago, I seem to remember an adjustment trimmer to get them together. Can someone tell me where to find that control?. Thanks. 73, de Howard, WA9RYF -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
[drakelist] TR-4C
I have a TR-4C that is losing the 9 mhz signal in T14. I assume the diodes are out. Is this repairable or is the thing junk? Terry, W8NJR **Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom000301)
Re: [drakelist] TR-4C
Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- You can open up the can and replace the diodes. The originals are Germanium and can be replaced with 1N541s (if you can find them, unlikely) or with 1N5711 or other Schottky diodes. You may find when you open it up that the diodes are ok, but have managed to short to the can. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line TR-4/C Service Supplement CDs www.k4oah.com [EMAIL PROTECTED] wrote: I have a TR-4C that is losing the 9 mhz signal in T14. I assume the diodes are out. Is this repairable or is the thing junk? Terry, W8NJR -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] TR-4C
OK thanks Gary. I thought it might be the diodes. I have 9 mhz signal going in and nothing coming out of T14. It looks a little tricky getting T14 out but I think that is the next step. I'll let you know what I find after I get it open. I better order some diodes! Terry In a message dated 3/22/2008 11:54:24 A.M. Eastern Daylight Time, [EMAIL PROTECTED] writes: Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- You can open up the can and replace the diodes. The originals are Germanium and can be replaced with 1N541s (if you can find them, unlikely) or with 1N5711 or other Schottky diodes. You may find when you open it up that the diodes are ok, but have managed to short to the can. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line TR-4/C Service Supplement CDs www.k4oah.com [EMAIL PROTECTED] wrote: I have a TR-4C that is losing the 9 mhz signal in T14. I assume the diodes are out. Is this repairable or is the thing junk? Terry, W8NJR -- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net -- **Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom000301)
Re: [drakelist] TR-4C
George Cortez Jr [EMAIL PROTECTED] made an utterance to the drakelist gang -- I opened mine up and it wasnt that hard, Just be careful of the tiny wires on the coil George NE2I [EMAIL PROTECTED] wrote: OK thanks Gary. I thought it might be the diodes. I have 9 mhz signal going in and nothing coming out of T14. It looks a little tricky getting T14 out but I think that is the next step. I'll let you know what I find after I get it open. I better order some diodes! Terry In a message dated 3/22/2008 11:54:24 A.M. Eastern Daylight Time, [EMAIL PROTECTED] writes: Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- You can open up the can and replace the diodes. The originals are Germanium and can be replaced with 1N541s (if you can find them, unlikely) or with 1N5711 or other Schottky diodes. You may find when you open it up that the diodes are ok, but have managed to short to the can. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line TR-4/C Service Supplement CDs www.k4oah.com [EMAIL PROTECTED] wrote: I have a TR-4C that is losing the 9 mhz signal in T14. I assume the diodes are out. Is this repairable or is the thing junk? Terry, W8NJR -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net -- Create a Home Theater Like the Pros. Watch the video on AOL Home http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom000301. -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] TR-4C
Thanks George. In a message dated 3/22/2008 1:19:29 P.M. Eastern Daylight Time, [EMAIL PROTECTED] writes: George Cortez Jr [EMAIL PROTECTED] made an utterance to the drakelist gang -- I opened mine up and it wasnt that hard, Just be careful of the tiny wires on the coil George NE2I [EMAIL PROTECTED] wrote: OK thanks Gary. I thought it might be the diodes. I have 9 mhz signal going in and nothing coming out of T14. It looks a little tricky getting T14 out but I think that is the next step. I'll let you know what I find after I get it open. I better order some diodes! Terry In a message dated 3/22/2008 11:54:24 A.M. Eastern Daylight Time, [EMAIL PROTECTED] writes: Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- You can open up the can and replace the diodes. The originals are Germanium and can be replaced with 1N541s (if you can find them, unlikely) or with 1N5711 or other Schottky diodes. You may find when you open it up that the diodes are ok, but have managed to short to the can. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line TR-4/C Service Supplement CDs www.k4oah.com [EMAIL PROTECTED] wrote: I have a TR-4C that is losing the 9 mhz signal in T14. I assume the diodes are out. Is this repairable or is the thing junk? Terry, W8NJR -- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net -- Create a Home Theater Like the Pros. Watch the video on AOL Home http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom000301. -- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net -- **Create a Home Theater Like the Pros. Watch the video on AOL Home. (http://home.aol.com/diy/home-improvement-eric-stromer?video=15?ncid=aolhom000301)
Re: [drakelist] T-4X R-4A zerobeat
EP Swynar [EMAIL PROTECTED] made an utterance to the drakelist gang -- Hi Garey, Could C61, then, be used as a sort of an R.I.T. when using the Twins in tranceive mode...? It'd be a bit of a challenge because of its maximum 8-pfd. rating physical location all, though, wouldn't it... Hmm... ~73~ Eddy VE3CUI - VE3XZ - Original Message - From: Garey Barrell [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, March 22, 2008 10:13 AM Subject: Re: [drakelist] T-4X R-4A zerobeat Howard - C61 is in the Receiver, accessible from the top, just in front of V3. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line TR-4/C Service Supplement CDs www.k4oah.com Howard Traxler wrote: Howard Traxler [EMAIL PROTECTED] made an utterance to the drakelist gang -- In case this question didn't get to the right person, allow me to ask again: I have a T-4X and R-4A that are not zerobeat when I use them in tranceive mode. From many years ago, I seem to remember an adjustment trimmer to get them together. Can someone tell me where to find that control?. Thanks. 73, de Howard, WA9RYF -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
Re: [drakelist] T-4X R-4A zerobeat
Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Eddy - A very restricted RIT!! It only moves a couple hundred Hz. Easier to just switch back to separates. I'm about 95% CW, and never saw much use for transceive. I like being able to vary the receiver slightly during a QSO, just to vary the tone, if nothing else. 73, Garey - K4OAH Glen Allen, VA EP Swynar wrote: EP Swynar [EMAIL PROTECTED] made an utterance to the drakelist gang -- Hi Garey, Could C61, then, be used as a sort of an R.I.T. when using the Twins in tranceive mode...? It'd be a bit of a challenge because of its maximum 8-pfd. rating physical location all, though, wouldn't it... Hmm... ~73~ Eddy VE3CUI - VE3XZ - Original Message - From: Garey Barrell [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, March 22, 2008 10:13 AM Subject: Re: [drakelist] T-4X R-4A zerobeat Howard - C61 is in the Receiver, accessible from the top, just in front of V3. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 4-B, C-Line TR-4/C Service Supplement CDs www.k4oah.com Howard Traxler wrote: Howard Traxler [EMAIL PROTECTED] made an utterance to the drakelist gang -- In case this question didn't get to the right person, allow me to ask again: I have a T-4X and R-4A that are not zerobeat when I use them in tranceive mode. From many years ago, I seem to remember an adjustment trimmer to get them together. Can someone tell me where to find that control?. Thanks. 73, de Howard, WA9RYF -- Submissions:[EMAIL PROTECTED] Unsubscribe:[EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost:[EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net --
