"Tom Taylor \(MSTV\)" <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- An intermittent problem I see with my R-4 & T-4 (the xmtr without a VFO) pair is after transmitting, the receiver is often practically deaf. A few clicks of the key or mike switch to trigger the relay often fixes the problem. My theory is that the contacts on the relay, particularly the antenna switchover contact, needs cleaning. Perhaps replacing the relay with this recommended replacement will solve the problem.
Tom N7TM -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Garey Barrell Sent: Wednesday, September 28, 2005 8:29 PM To: DW Harms Cc: [email protected] Subject: Re: [drakelist] T-R relay Garey Barrell <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- Dick - Why are you wasting time with EBay? You can buy a new relay, Potter & Brumfield R10-E1Y4-V2.5K, which is the standard relay in all the T(R)-4 (any) transmitters. The original Varley relay had a 15K coil, which meant very fine wire. There was a fairly high failure rate caused by the wire breaking, possibly because of the heating and cooling cycles of the transmitter. The only change necessary to use the 2.5K ohm relay above is to add a 1.5K, 1/2W resistor in series with the coil. They're available from both Digi-Key and Mouser for about $15. They're also available from Newark, and probably their Farnell division in EU. 73, Garey - K4OAH Atlanta Drake C-Line Service Manual <http://www.k4oah.com> DW Harms wrote: >"DW Harms" <[EMAIL PROTECTED]> made an utterance to the drakelist gang >---------------------------------------------------------------------- >Drakelist de PA2DW, > >I was outbidded on E-bay for that nice T-4C T-R relay )(&(&*!^$#!@@:( >While I was sound asleep the auction ended and although for days I was the >high bidder, I was lost in the end of course. I really start to hate that >E-bay thing... >Now my question is, whom of you is the lucky winner of that relay?! Must be >one of you out there and maybe we can come to some [EMAIL PROTECTED] ;))) > >73, Dick PA2DW > > ---------------------------------------------------------------------- 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 ---------------------------------------------------------------------- ---------------------------------------------------------------------- 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 ----------------------------------------------------------------------
