"Dave" <[EMAIL PROTECTED]> made an utterence to the drakelist gang ---------------------------------------------------------------------- Guys... Thank you much for your input. I'm not totally out of the water yet, but I did find that if I hold the Carrier Oscillator cable near my TH-F6A HT set to CW mode, zero beat is closer to 5646, so my TR7's counter must be off. I'm going to confirm that against my R8B, which should be a bit more accurate.
...off to more investigation, and I may need to lift C155 as you suggested, Ken, since C61 doesn't seem to want to go down far enough. The real fix is probably the crystal, as you mentioned, Gerry. Thanks again! Dave - NO3K -----Original Message----- From: Gerry [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 09, 2005 6:25 PM To: 'Ken, WA2LBI'; [EMAIL PROTECTED]; 'David Havel' Cc: [email protected] Subject: RE: [drakelist] T-4XC Off Frequency with an R-4B One thing about crystals: they age! As they do, they slowly change frequency. I had a problem with my TR-6 where it was impossible to center the 9 mHz oscillator for equal (or perceptibly equal) response between USB and LSB. The answer was a new crystal. This includes range crystals. One of my original accessory crystals for my first R-4B which I bought way back in '70 has drifted about 10kHz. Geez, that's 35 years, how time flies! -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ken, WA2LBI Sent: Wednesday, March 09, 2005 7:37 AM To: [EMAIL PROTECTED]; David Havel Cc: [email protected] Subject: Re: [drakelist] T-4XC Off Frequency with an R-4B "Ken, WA2LBI" <[EMAIL PROTECTED]> made an utterence to the drakelist gang ---------------------------------------------------------------------- Dave, I recently repaired a R-4B and T-4XB with a similar problem. The 5595 Kc oscillator in the second mixer, V3 (12BE6), would not make frequency no matter where C61 was adjusted. I removed C155, a cap value selected during production, and that brought it within range of C61. It worked fine once the freq was set. Ken, WA2LBI Quoting David Havel <[EMAIL PROTECTED]>: > Hi folks, > > I recently acquired a C Line, and have sent the R-4C off for upgrading. > Upon performing an alignment on the T-4XC, and trying it out with my > R-4B receiver, it appears to be transmitting about 700 Hz lower than > the display > shows on both the R-4B or the xmtr. itself. This is regardless of > whether the rcvr. or the xmtr. is controlling the frequency. It did > work very good > with the R-4C, so I don't know if I messed up something during the > alignment, or if the Carrier Oscillator connection to the R-4C locked > it in > to where it should be. > > I checked the Carrier Oscillator frequency by connecting it to the > counter of my TR7, and it is right on 5645 KHz via C6. I believe I > performed the alignment okay per the manual, although the Carrier > Oscillator, Filter Match, and Balanced Modulator adjustments were > performed while watching the > S meter on my TR7, since the S Meter isn't responsive enough to notice > the change as in plate current as described. I am having some trouble > getting any canary chirping sound with the R-4B while attempting the > transceive alignment. I'm getting a steady tone of around 800 or so > Hz that rises or lowers with the adjustment of C-61 in the R-4B. > > Any ideas as to what might be happening here? > > Thank you in advance for any suggestions to try! > > 73, > Dave - NO3K > ---------------------------------------------------------------------- On Behalf of "Ken, WA2LBI" <[EMAIL PROTECTED]> Submissions: [email protected] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: http://www.zerobeat.net Brought to you courtesy of TLCHost.net http://www.tlchost.net/ ---------------------------------------------------------------------- ---------------------------------------------------------------------- On Behalf of "Dave" <[EMAIL PROTECTED]> Submissions: [email protected] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: http://www.zerobeat.net Brought to you courtesy of TLCHost.net http://www.tlchost.net/ ----------------------------------------------------------------------
