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21. Re: [Amps] Alpha fault 17 (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Fri, 9 Dec 2016 09:00:55 -0500
I haven't looked at the block diagram to see how the Tune LEDs might be tied in but I had this easy diagnostic that sounds like it could be affecting your TUNE LEDS plus give you a fault 17. I found
/archives//html/Amps/2016-12/msg00215.html (11,457 bytes)

22. Re: [Amps] Alpha 87a issues - fault 17 (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Fri, 9 Dec 2016 09:55:39 -0500
Hi Don, Another thought... have you noticed whether the Fault 17 occurs when changing bands? If so, here is another note I found in my files from Glenn at Alpha years ago where a misalignment of the
/archives//html/Amps/2016-12/msg00216.html (10,525 bytes)

23. Re: [Amps] Alpha fault 17 (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Fri, 9 Dec 2016 13:47:39 -0500
Good to hear you have narrowed it down. With the Alpha87a getting less and less support, it is vital that we owners keep each other up to date with repair issues and share our experiences. It is stil
/archives//html/Amps/2016-12/msg00225.html (14,404 bytes)

24. [Amps] FS:Coaxial Dymanics 83000A Peak and Average Powermeter (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Tue, 13 Dec 2016 19:37:14 -0500
FS: Coaxial Dynamics Ham Radio Wattmeter 83000A Peak/Average, Used very low hours, in near Mint condition. Fully compatible to Bird Models 43 43P & 4314B -- $275 OBO . Shock Mounted "Taut Band" Meter
/archives//html/Amps/2016-12/msg00355.html (7,599 bytes)

25. [Amps] FS: Fluke 8840A / AF 5-1/2 Digit True RMS Multimeter (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Tue, 13 Dec 2016 22:42:24 -0500
FLUKE 8840A/AF 5-1/2 DIGIT TRUE RMS MULTIMETER -- $160 plus shipping 2 AND 4 WIRE FRONT AND REAR INPUTS CALIBRATION QUITE ACCURATE BRIGHT DISPLAY, VERY GOOD COSMETIC CONDITION NO RACK OR HANDLE I hav
/archives//html/Amps/2016-12/msg00357.html (7,028 bytes)

26. Re: [Amps] 30L1 keying (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Tue, 27 Dec 2016 16:50:58 -0500
Take a look at Jim's (W8ZR) website for his StationPro II schematics. He incorporates a nice simple MOSFET design to accommodate the 30L-1 keying as well as modern keying. www.w8zr.com 73 es HNY Jerr
/archives//html/Amps/2016-12/msg00449.html (7,397 bytes)

27. Re: [Amps] More about amplifier keying (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Wed, 28 Dec 2016 11:41:17 -0500
Speaking of switching speed-- Instead of using a sequencer, my ICOM provides a setting to delay keying the Amp. What is a considered a reasonable delay 10ms, 20ms, 30ms ?? 73 es HNY Jerry NY2KW Brian
/archives//html/Amps/2016-12/msg00474.html (8,867 bytes)

28. Re: [Amps] Alpha 87A Fault 17 (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Sat, 31 Dec 2016 10:28:25 -0500
Fault 17 could be due to several issues, the fault reporting only shows the last fault and sometimes the actual triggering cause may precede the 17. You will need to hook up the 87A to a PC with hype
/archives//html/Amps/2016-12/msg00542.html (14,241 bytes)

29. Re: [Amps] Alpha 87A Fault 17 (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Sat, 31 Dec 2016 16:02:06 -0500
Charlie, I don't think it's the wattmeter as the amp can easily handle VSWR to 1.5 and with some tuning up to 2:1. Did you only test into your Yagi. Have you tested this on all bands into a dummy loa
/archives//html/Amps/2016-12/msg00546.html (17,415 bytes)

30. Re: [Amps] Alpha Switching Diodes (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Wed, 1 Mar 2017 10:54:57 -0500
I never heard of any official alteration to the pin diodes such as replacing them with vacuum switches by Alpha in any of their last 3 (4?) company manifestations. I know there have been people who h
/archives//html/Amps/2017-03/msg00007.html (7,931 bytes)

31. Re: [Amps] Alpha Switching Diodes (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Wed, 1 Mar 2017 16:32:55 -0500
OK, my experience is with the 87A only. Sorry if I misled anyone. 73 Jerry NY2KW Jerry: Alpha had a user installed mod kit out for the Alpha 86 where they replaced the Pin Diodes with 2 x Vacuum Rela
/archives//html/Amps/2017-03/msg00016.html (8,163 bytes)

32. Re: [Amps] 1/4" Panel bushing and insulated Couplers Needed (score: 1)
Author: "Jerry O. Stern" <jsternmd@att.net>
Date: Tue, 14 Mar 2017 21:50:58 -0400
Leeds Electronics now in Bronx, NY Here is the link https://www.etsy.com/listing/218850751/5-jackson-brothers-chrome-panel-bushings?utm_source=google&utm_medium=cpc&utm_campaign=shopping_us_e-electro
/archives//html/Amps/2017-03/msg00099.html (8,294 bytes)

33. Re: [Amps] Alpha Amps (score: 1)
Author: Jerry Stern <jsternmd@att.net>
Date: Tue, 3 Oct 2017 09:15:58 -0400
Here, here!!!!! Jerry NY2KW Sent from my iPhone . _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2017-10/msg00016.html (11,265 bytes)

34. Re: [Amps] Status of Alpha (score: 1)
Author: "Jerry" <jsternmd@att.net>
Date: Tue, 3 Oct 2017 18:47:55 -0400
Hi Mike, Huge thanks for your transparency and continued support. I didn't take any of your posts in any sort of negative manner, in fact I found them thoughtful and informative. Some of us older ham
/archives//html/Amps/2017-10/msg00033.html (13,914 bytes)

35. Re: [Amps] Alpha (score: 1)
Author: "Jerry" <jsternmd@att.net>
Date: Thu, 5 Oct 2017 16:46:00 -0400
There was a site up for a few years that said all of the amp specific data resided in 64 hex bytes beginning at B600. He recommended using the ZOC Terminal from http://www.emtec.com and had a nice si
/archives//html/Amps/2017-10/msg00061.html (17,637 bytes)

36. Re: [Amps] Accidental Alpha 87A (score: 1)
Author: "Jerry" <jsternmd@att.net>
Date: Wed, 8 Nov 2017 09:21:43 -0500
The first thing you should do before powering it up: 1) check HV transformer voltage strap setting (see manual) and match it to your QTH AC supply. 2) check all low voltage molex connectors and make
/archives//html/Amps/2017-11/msg00064.html (8,905 bytes)

37. Re: [Amps] Alpha 87A Won't Key (score: 1)
Author: "Jerry" <jsternmd@att.net>
Date: Wed, 22 Nov 2017 17:57:48 -0500
Not sure I understand the problem. If the amp is on STBY then you have to manually place the switch into OPR before keying. If the STBY/OPR switch is not working you can use HB9ZS CAT software, to ch
/archives//html/Amps/2017-11/msg00185.html (8,395 bytes)

38. Re: [Amps] Alpha 87A Won't Key (score: 1)
Author: "Jerry" <jsternmd@att.net>
Date: Wed, 22 Nov 2017 19:04:29 -0500
With the amp powered off and IF the OPR/STBY switch is down in the STBY position, when you power on the LED will be red during warm-up cycle then it will turn yellow. You will not be able to key the
/archives//html/Amps/2017-11/msg00187.html (11,515 bytes)

39. Re: [Amps] Alpha 87A Won't Key (score: 1)
Author: "Jerry" <jsternmd@att.net>
Date: Wed, 22 Nov 2017 19:50:17 -0500
Frank, Send the terminal command "OPER" only returns the current state. To have it switch to OPR you have to enter 'OPER ON' 73 Jerry, NY2KW Frank, you have to manually put the switch from standby to
/archives//html/Amps/2017-11/msg00189.html (13,528 bytes)

40. Re: [Amps] Alpha 87A Won't Key (score: 1)
Author: Jerry Stern <jsternmd@att.net>
Date: Mon, 27 Nov 2017 13:04:24 -0500
The front panel drops down pretty easily but be careful not to loosen any of the cables. I did a switch many years ago and dont recall any major issues 73 jerry NY2KW Sent from my iPhone ____________
/archives//html/Amps/2017-11/msg00214.html (8,923 bytes)

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