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Total 28 documents matching your query.

1. [Amps] 8877 won't load on 80M (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Sat, 26 Jan 2013 15:18:40 -0800 (PST)
I have a homebrew 8877 that has been working fine for 12 years on 160 and 40 thru 10, but I never had an 80M antenna. I finally got one up and the amp wont load on 80. It is stable, draws full curren
/archives//html/Amps/2013-01/msg00162.html (6,701 bytes)

2. Re: [Amps] 8877 won't load on 80M (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Mon, 28 Jan 2013 13:33:50 -0800 (PST)
I don't have a signal source outside the bands, but with an antenna analyzer connected to the output and a 2300 ohm resister from plate to ground, it will tune to 1.2:1 SWR on on the analyzer set to
/archives//html/Amps/2013-01/msg00170.html (8,496 bytes)

3. Re: [Amps] 8877 won't load on 80M (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Wed, 13 Mar 2013 13:48:23 -0700 (PDT)
I finally got around to digging out another blocking cap, unfortunately, same results. It draws more current with more drive, but plate and load controls have no effect on plate current, grid current
/archives//html/Amps/2013-03/msg00195.html (7,865 bytes)

4. Re: [Amps] 8877 won't load on 80M (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Fri, 15 Mar 2013 09:49:44 -0700 (PDT)
I've done it with a 2300 ohm resistor, and it tuned to 1.2;1 SWR  on the analyzer, so I'm assuming the pi-net is good, there is no tuned input. there isn't much left, if the 80M energy was going else
/archives//html/Amps/2013-03/msg00211.html (11,449 bytes)

5. Re: [Amps] 8877 wont load on 80M (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Sun, 17 Mar 2013 17:53:08 -0700 (PDT)
I was working 40 & 75 meters tonight, and found with the bandswitch just off the detent of 80M, it has 1100 watts output! The amp uses a B&W 850 and I have another bandswitch coupled behind it to swi
/archives//html/Amps/2013-03/msg00240.html (7,852 bytes)

6. Re: [Amps] Plate choke explodes (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Sat, 13 Apr 2013 09:56:07 -0700 (PDT)
I've used an Ohmite Z-50 for a plate choke in my 6M 8877 since 1999, no smoke yet. Dick, NY1E REPLY:  I remember the Ohmite Z-series chokes. That are effective chokes precisely because they are self-
/archives//html/Amps/2013-04/msg00099.html (7,889 bytes)

7. [Amps] QST SB220 on 6M article (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Tue, 27 Oct 2015 23:58:40 +0000 (UTC)
In the 1970s I converted a Heath SB220 to 6m. It was from a QST hints and kinks coloum and only changed 10M, 80-15 remained unchanged. . I had so many requests for the info I had a sheet printed to s
/archives//html/Amps/2015-10/msg00053.html (7,107 bytes)

8. [Amps] SB220 on 120V (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Mon, 4 Apr 2016 01:05:59 +0000 (UTC)
Hello list,  I've had an SB220  in the past and am looking for another one, but I will have to run it on 120 volts, How does the 10A breaker handle the change? I've never heard of anyone changing the
/archives//html/Amps/2016-04/msg00001.html (6,705 bytes)

9. [Amps] Harbach capacitors for SB220 (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Mon, 25 Apr 2016 22:45:41 +0000 (UTC)
Harbach shows two set of replacement caps for the SB220, the cheaper has more capacitance! $100 or $150. Whats up with that??de Dick NY1E _______________________________________________ Amps mailing
/archives//html/Amps/2016-04/msg00044.html (6,651 bytes)

10. Re: [Amps] Harbach capacitors for SB220 (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Tue, 26 Apr 2016 17:30:48 +0000 (UTC)
Thanks Paul, I just ordered your kit and the RM220 meter board!de Dick NY1E From: Paul Kraemer <elespe@lisco.com> To: Dick NY1E <dick@ny1e.com>; Amps <amps@contesting.com> Sent: Tuesday, April 26, 20
/archives//html/Amps/2016-04/msg00046.html (8,883 bytes)

11. [Amps] SB220 Bandswitch arcing (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Sat, 17 Sep 2016 02:04:14 +0000 (UTC)
I picked up a well abused sb220. after adding a Harbach capacitor kit and meter board, I find the band switch arcs. Pulling or pushing on the bandswitch knob changes tuning, it eventually works. But
/archives//html/Amps/2016-09/msg00070.html (6,956 bytes)

12. [Amps] Glitch resistor (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Sun, 13 Nov 2016 01:52:21 +0000 (UTC)
My SB220 stopped operating, with no plate current and pegging the grid meter after a bright light out of the rear fan grill. It seems an added glitch resistor opened, 10 ohm 10 watts doesn't seem big
/archives//html/Amps/2016-11/msg00037.html (7,212 bytes)

13. [Amps] Machlett 3-500Z tubes (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Sat, 26 Nov 2016 01:43:17 +0000 (UTC)
I need a pair of 3-500Z's, looking on Ebay I see Machlett tubes for $260 for a pair! has anyone used them?. Or should I stick with RFP?de Dick NY1E _______________________________________________ Amp
/archives//html/Amps/2016-11/msg00117.html (6,629 bytes)

14. Re: [Amps] Glow, gettering, and voltage (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Mon, 9 Jan 2017 14:11:56 +0000 (UTC)
I do not want to wear out the unobtainium CW/SSB switch by going back and forth every time I use the amp. I want to pick one voltage setting and do 95% of my operation there. 73, Cathy N5WVR I do jus
/archives//html/Amps/2017-01/msg00195.html (8,294 bytes)

15. Re: [Amps] Amps Digest, Vol 175, Issue 30 (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Thu, 27 Jul 2017 22:04:46 +0000 (UTC)
And the watt meter is pretty much relative unless fed  into a perfect load, Accounting for all the people who claim 1500 watts out of an SB220.... de NY1E From: "amps-request@contesting.com" <amps-re
/archives//html/Amps/2017-07/msg00106.html (10,915 bytes)

16. [Amps] Glitch resistor + fuse? (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Mon, 13 Nov 2017 15:03:46 +0000 (UTC)
I have 2 amplifiers, an SB220 and a TL922A, they both had 10 watt glitch resistors added before I got them, they have each done their job but self destructed when they did. I replaced them with 25 wa
/archives//html/Amps/2017-11/msg00136.html (7,599 bytes)

17. Re: [Amps] Glitch resistor + fuse? (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Wed, 15 Nov 2017 16:35:46 +0000 (UTC)
Where can I find a fuse holder for the microwave oven fuses, at 1.6" it doesn't sound like it would fit a 1.25" holder. Would an old appliance have a removable fuse holder? Dick NY1E "Modern fuses de
/archives//html/Amps/2017-11/msg00153.html (9,083 bytes)

18. [Amps] TL922A fuses (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Tue, 9 Jan 2018 22:01:33 +0000 (UTC)
I want to get some spare fuses for my TL922A, the ones in it have a small nut like 8-32 the cap with them, I'm guessing what I got in it are that much shorter than Kenwood supplied or I'm missing a s
/archives//html/Amps/2018-01/msg00061.html (6,617 bytes)

19. [Amps] HV fuse blowing (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Tue, 16 Jan 2018 01:21:33 +0000 (UTC)
Twice in the past month I've blown the fuse in My TL922A  in series with my glitch resistor. There's no bang just output stops and grid current goes thru the roof. Its a little glass fuse 1 amp at 25
/archives//html/Amps/2018-01/msg00071.html (7,052 bytes)

20. [Amps] SB220 changing SWR in bypass (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Wed, 26 Dec 2018 16:13:43 +0000 (UTC)
 When I arrived back in Florida for the winter, first thing I did was stack my 6 M beams. When I go to operate I find my 1.1:1 match had moved to 51.8 Mhz. after fooling around with the antennas I ev
/archives//html/Amps/2018-12/msg00111.html (7,027 bytes)

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