[Drakelist] R4C deaf and TR7 questions AGC, tx all band mod

2011-09-27 Thread ian parkinson
Greetings from over the Pond, oddly I have had a R4C stored in a damp area, and years later when I fired up it still works..though I have only run it short periods. The 2nd R4C is rather deaf both with normal rx and with the xtal calibrater..if its not the valve and I have both 6ej7 and the uk

Re: [Drakelist] Drake R4B

2011-09-27 Thread Garey Barrell
Gary - KE9PQ has feet! Yes, the serial numbers are sequential and there are three versions of the 'B' that set data points. WB4HFN has a 'Serial Number Database' on his site for most Drake gear. 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line and TR-4/C Service

Re: [Drakelist] Drake R-4b upgrade

2011-09-27 Thread Garey Barrell
Guillermo - I tried to send you a direct message last night, but was refused by your ISP. Do you have another address that will work? 73, Garey - K4OAH Glen Allen, VA Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line and TR-4/C Service Supplement CDs www.k4oah.com GGLL wrote: Hello Garey, my

Re: [Drakelist] Drake R-4b upgrade

2011-09-27 Thread Garey Barrell
Guillermo - Actually the 0B2 was a 'downgrade' that was only used in the first 1000 (s/n 7000 - 7999). It was holdover from the R-4A which still had a tube based CALIBRATOR that needed the 'regulated' +150 VDC. Starting with the R-4B, the CAL circuit was changed to an FET with RTL dividers

[Drakelist] TR7 questions AGC

2011-09-27 Thread Don Buska - The Radio Lab Works
Hi Ian, There is no risk performing the all band TX mod on the TR7 and it is an easy way to get the WARC bands using the UP-DOWN buttons. I used that method before I installed the AUX7 module. Regarding the AGC. Do you want something faster than the current FAST setting via the front panel AGC

Re: [Drakelist] R4C deaf and TR7 questions AGC, tx all band mod

2011-09-27 Thread Jim Shorney
On Tue, 27 Sep 2011 07:41:03 -0400, ian parkinson wrote: I saw a Mod for the TR 7 which involves cutting some pcb tracks for all band tx option..it certainly would be great to operate on the 30 metre WARC band. Any thoughts over this mod is it too risky ?? The only real risk, per se, is that

[Drakelist] A liitle off, but...

2011-09-27 Thread Neil M Califano
Is an antenna matcher a balun or unun since it matches the antenna to the input impedance? ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist

Re: [Drakelist] A liitle off, but...

2011-09-27 Thread Richard Knoppow
- Original Message - From: Neil M Califano cchange...@yahoo.com To: Drakelist@zerobeat.net Sent: Tuesday, September 27, 2011 3:30 PM Subject: [Drakelist] A liitle off, but... Is an antenna matcher a balun or unun since it matches the antenna to the input impedance? I'm not sure

[Drakelist] A *little off, but...

2011-09-27 Thread Neil M Califano
Is an antenna matcher a balun or unun since it matches the antenna to the input impedance? ___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist

[Drakelist] PRN1000

2011-09-27 Thread Gordon King
Is subject rcvr. equivalent electronically to the SW2? I need a manual and schematic.        tnx.Gordy___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist

[Drakelist] De-crudding the PBT

2011-09-27 Thread Steve Wedge
Yes, it really is as easy as it says on Garey's B-Line CD. The old grease was pretty dried out - I cleaned all the metal parts with brake cleaner, used Rem Oil for the thin shaft and moly grease for the cam, larger shaft and bearing surfaces. The moly grease is very low-viscosity compared to

[Drakelist] Grounding the mic input

2011-09-27 Thread Steve Wedge
It looks in the schematic as though there's plenty of resistance in series with the mic input. I'm willing to use PTT only and the easiest way (and least degrading to the low-level audio signal from the mic) is to jumper one of the NC contacts in the PTT switch that goes to GND over to the