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21. [AMPS] Hot Switching (score: 1): Author: dick.green@valley.net (Dick Green); Date: Tue, 21 Mar 2000 00:38:52 -0500; I measured the timing of the transistor remote switching option. I didn't see any provision in the 990 schematic for keying the amp on key closure when the relay option is selected -- basically the; /archives//html/Amps/2000-03/msg00856.html (8,955 bytes)
22. [AMPS] HELP LK550 AMP HELP (score: 1): Author: dick.green@valley.net (Dick Green); Date: Tue, 22 Feb 2000 02:48:39 -0500; FIRST: DON'T WORK ON THIS AMP WHEN IT'S PLUGGED IN! THERE'S NO INTERLOCK. DON'T STICK YOUR HANDS IN THE AMP WHEN IT'S ON! Pull all three tubes and test them one at a time, in one of the sockets other; /archives//html/Amps/2000-02/msg00474.html (7,330 bytes)
23. [AMPS] Alpha 86 Opinions (score: 1): Author: dick.green@valley.net (Dick Green); Date: Thu, 6 Jan 2000 01:32:35 -0500; Anybody know anything about this amp? As I recall, it wasn't on the market very long before it was replaced by the 89. The two amps look a lot alike. What are the differences? Were there any design o; /archives//html/Amps/2000-01/msg00134.html (7,051 bytes)
24. [AMPS] Alpha 86 qsk question (score: 1): Author: dick.green@valley.net (Dick Green); Date: Fri, 3 Dec 1999 00:10:46 -0500; The FT-990 has notoriously poor QSK performance, clipping every element. It also clips the first element in VOX mode. The scope pictures in the original QST review confirm this. I've scoped one of th; /archives//html/Amps/1999-12/msg00019.html (7,902 bytes)
25. [AMPS] KM1H (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Tue, 26 Oct 1999 11:05:28 -0400; I saw Carl about five weeks ago and he was fine. We toured his QTH, where I saw the biggest piles of used tower sections and hardline I've ever seen. His shack/workshop is crammed to the gills with e; /archives//html/Amps/1999-10/msg00640.html (8,243 bytes)
26. [AMPS] KM1H (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Tue, 26 Oct 1999 17:45:19 -0400; Yes, I heard exactly the same story. Can't blame Bill for banning Carl, but after a suitable period of punishment, forgiveness is a virtue. BTW, Carl also claims that his computer is down, which is; /archives//html/Amps/1999-10/msg00650.html (8,665 bytes)
27. [AMPS] Autotune arrives for the 87A! (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Fri, 20 Aug 1999 00:07:30 -0400; I just received my ALPHAMAX firmware and ALPHAREMOTE software upgrade package to add autotune and Windows remote control to my 87A. Alpha Power has done a fine job on the upgrade. The installation wa; /archives//html/Amps/1999-08/msg00285.html (7,495 bytes)
28. [AMPS] RJ-iA relay contact-life on CW? (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Sun, 4 Jul 1999 16:27:09 -0400; Hmmm. Let's put together a little thought experiment on how long an RJ1A should last a contester. Rich says the RJ1A is rated for 2,000,000 closures. Lately, I've been averaging about 2,000 QSOs in t; /archives//html/Amps/1999-07/msg00049.html (10,592 bytes)
29. [AMPS]n4kw@citrus.infi.net RJ-iA relay contact-life on CW? (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Mon, 5 Jul 1999 12:25:22 -0400; ? Owners of FT-1000Ds have reported seeing RF output at 5mS. FWIW, my resent measurements of three popular transceivers are as follows: TS-950SDX -- 15ms FT-990 -- 10ms FT-1000mp -- 8ms Unfortunatle; /archives//html/Amps/1999-07/msg00063.html (11,044 bytes)
30. [AMPS] Summary of LK550-ZC rehab (long) (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Mon, 5 Jul 1999 15:42:45 -0400; Some of you may remember a bunch of questions I asked about an Amp International LK550-ZC I was repairing for a friend. This report may be of interest to anyone who needs to repair one of these amps.; /archives//html/Amps/1999-07/msg00068.html (14,196 bytes)
31. [AMPS]n4kw@citrus.infi.net RJ-iA relay contact-life on CW? (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Mon, 5 Jul 1999 16:34:26 -0400; ? does the amplifier control signal pass through a relay in the 990? Ooops. I should have been more clear about this. I didn't measure relay closure time on any of the rigs. I timed only the solid-s; /archives//html/Amps/1999-07/msg00070.html (10,551 bytes)
32. [AMPS] Power Output (was 4cx10000) (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Fri, 9 Jul 1999 11:59:56 -0400; ? Good points, Jan E.. Does 0.91 db (1850w vs. 1500w, <1/6 S-unit) more output really make a difference on HF when QSB is running around 3 S-units?. Some folks on AMPS have argued that it does. I am; /archives//html/Amps/1999-07/msg00157.html (13,190 bytes)
33. [AMPS] Re: Power Output (was 4cx10000) (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Fri, 9 Jul 1999 17:52:41 -0400; ? was it $1000 better sounding? Absolutely, positively not! I figure those interconnects sounded about $9.95 better. 73, Dick WC1M -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: am; /archives//html/Amps/1999-07/msg00165.html (7,234 bytes)
34. [AMPS] SB1000 PROBLEMS-HELP! (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Thu, 22 Jul 1999 12:11:10 -0400; Sounds like there's gas in the tube and it's arcing. As Rich advises, you can use a hi-pot tester to confirm this. You might be able to see the arcs momentarity before the fuses blow, but this is not; /archives//html/Amps/1999-07/msg00408.html (9,249 bytes)
35. [AMPS] Bias for SB-220 (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Tue, 1 Jun 1999 11:55:53 -0400; Pete, I built Rich's electronic bias for my SB-221 ten years ago, then recently rebuilt it after a powerful gassy tube arc destroyed a couple of components on it. I think it works very well (as does; /archives//html/Amps/1999-06/msg00008.html (8,977 bytes)
36. [AMPS] Amp keying (was Bias for SB-220) (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Wed, 2 Jun 1999 12:14:23 -0400; derived bit That can be arranged easily with a number of modern amateur transceivers and an electronic bias switch like Rich's. Suitable rigs assert a TX signal several milliseconds before allowing; /archives//html/Amps/1999-06/msg00053.html (14,006 bytes)
37. [AMPS] Bias for SB-220 (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Wed, 2 Jun 1999 13:03:18 -0400; Let's not forget the TS950SDX, which suffers from the same problem. 73, Dick, WC1M -- FAQ on WWW: http://www.contesting.com/ampfaq.html Submissions: amps@contesting.com Administrative requests: amps; /archives//html/Amps/1999-06/msg00054.html (9,335 bytes)
38. [AMPS] Bias for SB-220 (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Wed, 2 Jun 1999 16:03:59 -0400; ? Only for those who believe that way mo' ALC is way mo' betta Not so. I'm not an idiot, Rich. I always set the carrier control according to Kenwood recommendations -- meter deflection within the AL; /archives//html/Amps/1999-06/msg00063.html (10,731 bytes)
39. [AMPS] Alpha 76A Help Needed (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Thu, 3 Jun 1999 13:19:45 -0400; watts, and higher It might not be that complicated. I'd check the path between the point where the internal meter samples the output and the UHF output connector on the back panel. A loose connectio; /archives//html/Amps/1999-06/msg00096.html (8,355 bytes)
40. [AMPS] Bias for SB-220 (score: 1): Author: Dick Green" <dick.green@valley.net (Dick Green); Date: Thu, 3 Jun 1999 12:53:10 -0400; ? How many peak volts on your 'scope? With "normal" ALC indication, my TS-440S overshoots to about 120v-p. into 50-ohms. . I didn't measure it on my scope because I thought I needed a fast peak-readi; /archives//html/Amps/1999-06/msg00097.html (10,954 bytes)

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