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Total 233 documents matching your query.

1. [Amps] ARCO compression trimmer caps (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Sat, 11 Sep 2004 06:01:29 -0700
Frustration! I have pair of ARCO compression trimmers I want to use in a single-band amp in the input pi-network circuit and one of them has lost the mounting nut. This is a non-standard thread and e
/archives//html/Amps/2004-09/msg00189.html (7,560 bytes)

2. Re: [Amps] Panasonic tube radio (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Sat, 11 Sep 2004 18:10:02 -0700
_________________________________________________________ That's funny. Back in the olden days, audio purists chased after "perfect" fidelity. Now that it is achievable way beyond what the human ear
/archives//html/Amps/2004-09/msg00211.html (7,313 bytes)

3. Re: [Amps] Panasonic tube radio (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Sun, 12 Sep 2004 06:57:30 -0700
_________________________________________________________ When I got into ham radio in the late '50s it was more common for transmitters to be homebrewed than bought, especially if you include kits a
/archives//html/Amps/2004-09/msg00215.html (8,455 bytes)

4. Re: [Amps] Re: ARCO compression trimmer caps - I Use Tinnerman Nuts (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Sun, 12 Sep 2004 13:10:09 -0700
_________________________________________________________ I had forgotten about Tinnerman nuts. Thanks for reminding me. -- 73, Bill W6WRT _______________________________________________ Amps mailing
/archives//html/Amps/2004-09/msg00230.html (7,203 bytes)

5. [Amps] Recommend supplier for aluminum sheet? (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Mon, 13 Sep 2004 00:54:37 -0700
I need some pieces of sheet aluminum for an amp project. I've done a search on the internet and found a few suppliers who will do custom cutting and sell in small quantities. OnlineMetals.com has a v
/archives//html/Amps/2004-09/msg00235.html (6,775 bytes)

6. Re: [Amps] Alpha76A Multimeter - Postscript - long post (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Mon, 13 Sep 2004 07:23:47 -0700
_________________________________________________________ Before you toss the old meter, try blowing the movement out with compressed air. I have found a few meters which had somehow attracted iron f
/archives//html/Amps/2004-09/msg00250.html (7,726 bytes)

7. Re: [Amps] ARCO compression trimmer caps (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Mon, 13 Sep 2004 08:30:26 -0700
_________________________________________________________ I think what I may end up doing with this is using some double sided foam tape to mount it. Punch a hole for the mounting screw and stick it
/archives//html/Amps/2004-09/msg00254.html (9,100 bytes)

8. Re: [AMPS] floating a filament transformer (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Thu, 16 Sep 2004 07:20:17 -0700
_________________________________________________________ I haven't tried it myself but a couple of thoughts occurred: 1. I doubt if you'd need fewer uH for a primary choke. The transformer has lots
/archives//html/Amps/2004-09/msg00275.html (8,445 bytes)

9. Re: [Amps] input matching question on the YC156? (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Fri, 17 Sep 2004 07:35:16 -0700
_________________________________________________________ Is this true even when the tube is biased into cutoff? I've owned four commercially-made amps and all of them apply HV as soon as the power s
/archives//html/Amps/2004-09/msg00287.html (8,425 bytes)

10. Re: [Amps] Applying HV during Warmup (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Fri, 17 Sep 2004 10:40:33 -0700
_________________________________________________________ An electro-lawyer could argue that the above statement does not preclude applying either anode voltage only or drive voltage only, merely tha
/archives//html/Amps/2004-09/msg00298.html (7,527 bytes)

11. Re: [Amps] Getting Filament Voltage on an AL-82 (score: 1)
Author: "Bill Turner" <dezrat1242@ispwest.com>
Date: Sun, 19 Sep 2004 01:25:57 -0700
I would install a pair of banana jacks on the back panel and run small gauge wires to the filaments. Bypass both jacks to ground and put a bifilar RF choke in series with the wires. That way you have
/archives//html/Amps/2004-09/msg00328.html (8,266 bytes)

12. Re: [Amps] Getting Filament Voltage on an AL-82 (score: 1)
Author: "Bill Turner" <dezrat1242@ispwest.com>
Date: Sun, 19 Sep 2004 01:52:56 -0700
Actually, the resistors will affect the reading, but if you have a very high impedance DVM the effect will be small. I prefer to not use resistors so that I could use any voltmeter I have and not hav
/archives//html/Amps/2004-09/msg00330.html (8,582 bytes)

13. Re: [Amps] Equalising resistors with HV diodes (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Tue, 21 Sep 2004 00:08:49 -0700
_________________________________________________________ And miss all the fun??? -- Bill W6WRT _______________________________________________ Amps mailing list Amps@contesting.com http://lists.cont
/archives//html/Amps/2004-09/msg00369.html (8,928 bytes)

14. Re: [Amps] AL1200 (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Wed, 22 Sep 2004 08:44:41 -0700
_________________________________________________________ My AL1200 stopped working on 80 because the solder joint at the tap on the main tank coil broke loose. Give the wire a tug and see if it is s
/archives//html/Amps/2004-09/msg00403.html (8,099 bytes)

15. [Amps] Need a variable capacitor (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Sun, 26 Sep 2004 01:57:24 -0700
Building a single-band amp and need a 5kv variable, about 75-100 pf max. Prefer traditional type, not vacuum. Name your price. -- Bill W6WRT _______________________________________________ Amps maili
/archives//html/Amps/2004-09/msg00457.html (6,394 bytes)

16. Re: [Amps] bias for 3cx3000 (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Mon, 04 Oct 2004 07:33:09 -0700
_________________________________________________________ High power zeners are nearly bulletproof when it comes to brief overloads, power surges, spikes, arcs, etc, etc. Your low power transistor-an
/archives//html/Amps/2004-10/msg00030.html (7,529 bytes)

17. Re: [Amps] Kenwood TL-922A on 6 meters? (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Wed, 06 Oct 2004 10:18:24 -0700
_________________________________________________________ This problem can be fixed with a simple coil acting as an L-network connected between the plate choke and the input tuning capacitor. I used
/archives//html/Amps/2004-10/msg00062.html (8,368 bytes)

18. Re: [Amps] Kenwood TL-922A on 6 meters? (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Wed, 06 Oct 2004 10:50:37 -0700
_________________________________________________________ It's for six meters only. I removed all the coils and bandswitch. As for shorting out the L-network coil, the ARRL handbook states this is ge
/archives//html/Amps/2004-10/msg00064.html (8,265 bytes)

19. [Amps] Plate tank for 144 MHz using 8877 (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Fri, 08 Oct 2004 12:41:49 -0700
I have an 8877 which needs a plate tank circuit for 144 MHz. I'm aware of the one shown at http://web.wt.net/~w5un/8877-1.htm but I don't have the metal working facilities to make it. Is there anyone
/archives//html/Amps/2004-10/msg00095.html (6,806 bytes)

20. [Amps] Need for input tuning circuit (score: 1)
Author: Bill Turner <dezrat1242@ispwest.com>
Date: Fri, 08 Oct 2004 15:41:13 -0700
Consider a grounded-grid 8877 HF amplifier. I understand the need for an input tuning circuit to maintain linearity operating SSB, but what if the operation is CW or RTTY? What if the 8877 is driven
/archives//html/Amps/2004-10/msg00100.html (6,684 bytes)

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