- 21. [AMPS] PA-77 musings (score: 1)
- Author: N7CXI@SiliconPixels.com (Jim Barber)
- Date: Sun, 27 May 2001 17:11:24 -0700
- Hi folks, I recently bought a "basket case" PA-77. (single 8877) The OM decided to shoehorn a Dahl A77S transformer (1.2A CCS) and a 32uf filter into the case. He succeeded mechanically, but moved mo
- /archives//html/Amps/2001-05/msg00468.html (8,895 bytes)
- 22. [AMPS] PA-77 musings (correction) (score: 1)
- Author: N7CXI@SiliconPixels.com (Jim Barber)
- Date: Sun, 27 May 2001 17:33:07 -0700
- Oops, Make that "OUTPUT then BIAS/INPUT". Sorry. --jim -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrative requests: amps-REQUEST@contesting.com Problems
- /archives//html/Amps/2001-05/msg00470.html (7,394 bytes)
- 23. [AMPS] PA-77 musings (score: 1)
- Author: N7CXI@SiliconPixels.com (Jim Barber)
- Date: Mon, 28 May 2001 02:55:54 -0700
- Rich, .. Agreed. I'm tempted to rebuild the original board just to be able to look at it with the spectrum analyzer, but it probably isn't worth the trouble. My DSO/analyzer only goes to 16mhz anyway
- /archives//html/Amps/2001-05/msg00474.html (9,051 bytes)
- 24. [AMPS] PA-77 musings (score: 1)
- Author: N7CXI@SiliconPixels.com (Jim Barber)
- Date: Mon, 28 May 2001 03:45:19 -0700
- Phil, Thanks. I was guessing 12V, (and remember seeing a confirming design somewhere) and that helps. Do you use a transistor switch, or a relay? I ask because of the voltage drop across the transist
- /archives//html/Amps/2001-05/msg00477.html (7,721 bytes)
- 25. [AMPS] care to take a guess..? Alpha problem (score: 1)
- Author: N7CXI@SiliconPixels.com (Jim Barber)
- Date: Tue, 29 May 2001 21:47:39 -0700
- After looking over my '77, here's a list of things I'd check. .. Make sure bandswitch chain drive is in time. (correct contacts engaged and centered in all switches) .. Plate blocking cap. (already m
- /archives//html/Amps/2001-05/msg00507.html (10,441 bytes)
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