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Total 9 documents matching your query.

1. [Amps] Internal QSK-5 (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Sat, 31 Jan 2009 19:55:14 -0600; I have an AL80A with an internal QSK 5 switch (one of the early ones) that I've had since new (S/N 095). For well over 20 years, it's been working flawlessly. Recently, though, I had some 160 m anten; /archives//html/Amps/2009-01/msg00380.html (7,154 bytes)
2. Re: [Amps] Internal QSK-5 (score: 1): Author: "Phil Clements" <philc@texascellnet.com>; Date: Sat, 31 Jan 2009 21:38:59 -0600; On page 5 of the QSK-5 manual, it tell exactly what is going on, and how to do a couple of tests to see what the problem(s) may be. What they do not mention is that if your problem is only on 160 me; /archives//html/Amps/2009-01/msg00382.html (8,865 bytes)
3. Re: [Amps] Internal QSK-5 (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Sat, 31 Jan 2009 23:12:38 -0500; Wrong ... the fuse lamps protect the transceiver if the "receive" PIN diodes or HV power supply fails and amplifier RF gets through. They are also there to prevent the amplifier from running away in; /archives//html/Amps/2009-01/msg00384.html (10,216 bytes)
4. Re: [Amps] Internal QSK-5 (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Sun, 01 Feb 2009 10:06:44 -0600; Thanks, Phil! What I have is a very early PIN-5 switch (S/N 0018). I understand that this evolved into the QSK-5, but I don't know what the differences are. As this is an early model, I haven't much; /archives//html/Amps/2009-02/msg00004.html (10,220 bytes)
5. Re: [Amps] Internal QSK-5 (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Sun, 01 Feb 2009 10:16:31 -0600; Thanks, Joe! I stand corrected, especially after I renewed my memory looking at the docs I have. This is an early PIN-5 switch (S/N 0018) and it came with minimal documentation. Do you know what the; /archives//html/Amps/2009-02/msg00005.html (11,710 bytes)
6. Re: [Amps] Internal QSK-5 (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Sun, 01 Feb 2009 10:41:35 -0600; I looked at the manuals available Ameritron site. I can't find a schematic, but simply by looking at the parts list, it's clear that these two switches are different. How different remains a mystery.; /archives//html/Amps/2009-02/msg00008.html (10,928 bytes)
7. Re: [Amps] Internal QSK-5 (score: 1): Author: "Joe Subich, W4TV" <lists@subich.com>; Date: Sun, 1 Feb 2009 12:02:56 -0500; Kim, I was using the schematics for the QSK-5 at BAMA and comparing the functions to the DEO QSK-1500 that I was very familiar with a lifetime ago <G>. The PIN-5 should be very similar to internal ci; /archives//html/Amps/2009-02/msg00010.html (14,632 bytes)
8. Re: [Amps] Internal QSK-5 (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Sun, 01 Feb 2009 13:51:20 -0600; Thanks again, Joe! I suspect that the basic theory of operation is unchanged, but the hardware that implements the theory may be upgraded. I'll have to look on BAMA. Yes, Tom designed the PIN-5 which; /archives//html/Amps/2009-02/msg00018.html (16,646 bytes)
9. Re: [Amps] Internal QSK-5 (score: 1): Author: Kim Elmore <cw_de_n5op@sbcglobal.net>; Date: Sun, 01 Feb 2009 14:17:25 -0600; I downloaded the schematic from BAMA:the old PIN-5 ,ust be in there someplace, but it has evolved extensively. No ICs in the PIN-5, no FETs, and the PIN diodes are different. Both clearly must act as; /archives//html/Amps/2009-02/msg00019.html (16,043 bytes)

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