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References: [ +from:robrk@nidhog.net: 179 ]

Total 179 documents matching your query.

161. Re: [Amps] Ham Radio Magazine article six 572Bs on 160 meters (score: 1)
Author: RCM <robrk@nidhog.net>
Date: Sun, 13 Jan 2019 14:36:08 -0500
What I said, couple of days ago.. ARRL has them on CD for $$$$$. _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/am
/archives//html/Amps/2019-01/msg00057.html (8,675 bytes)

162. Re: [Amps] Impedance Match Calculator (score: 1)
Author: RCM <robrk@nidhog.net>
Date: Sat, 2 Feb 2019 16:48:14 -0500
Maybe https://www.rapidtables.com/calc/electric/ohms-law-calculator.html <https://www.rapidtables.com/calc/electric/ohms-law-calculator.html> www.rapidtable.com ______________________________________
/archives//html/Amps/2019-02/msg00011.html (7,999 bytes)

163. Re: [Amps] 3CX800 - a science experiment (score: 1)
Author: Nidhog <robrk@nidhog.net>
Date: Tue, 4 Jun 2019 16:20:09 -0400
You would have to switch side-bands... USB/LSB _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2019-06/msg00014.html (7,496 bytes)

164. Re: [Amps] Henry 2K desktop amp (score: 1)
Author: "R.Morris" <robrk@nidhog.net>
Date: Sat, 29 Jun 2019 11:34:05 -0400
Check your book. The older 2K floor model filaments were in series. Pull one, they both go out. Sent from my iPhone _______________________________________________ Amps mailing list Amps@contesting.c
/archives//html/Amps/2019-06/msg00072.html (8,674 bytes)

165. Re: [Amps] Amp causing RFI (score: 1)
Author: RCM <robrk@nidhog.net>
Date: Tue, 4 Feb 2020 15:27:26 -0500
Heres a free one with lots more stuff. http://www.repeater-builder.com/antenna/site-stuff/are-fifty-six-man-2005.pdf <http://www.repeater-builder.com/antenna/site-stuff/are-fifty-six-man-2005.pdf> _
/archives//html/Amps/2020-02/msg00020.html (8,238 bytes)

166. Re: [Amps] Henry 2K-4 Failure (score: 1)
Author: RCM <robrk@nidhog.net>
Date: Fri, 20 Mar 2020 17:09:51 -0400
Plan ahead for the next time you have to pull the lid off. Im sitting here looking at a line voltage meter reading 125 volts. I wonder why? Maybe your electric bill is based on KWH. The house is the
/archives//html/Amps/2020-03/msg00092.html (8,403 bytes)

167. Re: [Amps] Amps Digest, Vol 212, Issue 1 (score: 1)
Author: RCM <robrk@nidhog.net>
Date: Sat, 1 Aug 2020 14:35:28 -0400
Those amps, its power supply and tank circuit were designed when the rule was 1 KW input, and get 600 out. With the 2400 or so volts on the plate and not the 3500 of a Henry or Ameritron, all you ar
/archives//html/Amps/2020-08/msg00006.html (7,243 bytes)

168. Re: [Amps] History of Grounded Grid Amplfiers (score: 1)
Author: RCM <robrk@nidhog.net>
Date: Tue, 15 Dec 2020 13:07:21 -0500
I think 1969 is a little late to the dance. I have a 1959 Bill Orr handbook with a GG 304TL. Same book has my first home brew with 837s and Central Electronics 20A. Also, four 811s. A 4-250. A 1956
/archives//html/Amps/2020-12/msg00021.html (9,629 bytes)

169. Re: [Amps] Source of 811A or 572B tubes? (score: 1)
Author: RCM <robrk@nidhog.net>
Date: Tue, 29 Dec 2020 15:40:11 -0500
Im not where I can look it up, but there are notes in handbooks about which pins should in a vertical line. Something about sagging filament or grid. Guess newer manufacturers messed with the intern
/archives//html/Amps/2020-12/msg00081.html (8,538 bytes)

170. Re: [Amps] PL259 Connector Debate (score: 1)
Author: RCM <robrk@nidhog.net>
Date: Fri, 9 Apr 2021 20:29:12 -0400
And from your Harbor Freight tap and die set, Use the 7/16 x 14 die and cut the outer jacket of RG8, 213. Makes doing the shell a bunch easier. _______________________________________________ Amps ma
/archives//html/Amps/2021-04/msg00061.html (7,171 bytes)

171. Re: [Amps] AL-811 Tube Swap (score: 1)
Author: Nidhog <robrk@nidhog.net>
Date: Thu, 29 Apr 2021 11:27:44 -0400
Get out your oscilloscope and look at it. A $25 hamfest special is all you need. Sent from my iPad _______________________________________________ Amps mailing list Amps@contesting.com http://lists.c
/archives//html/Amps/2021-04/msg00105.html (9,143 bytes)

172. Re: [Amps] SB-220 Output Network (score: 1)
Author: Nidhog <robrk@nidhog.net>
Date: Thu, 12 Aug 2021 13:28:41 -0400
You are trying to put a 427 in a Vega. Go read a handbook or go here. I dont have a Microslop computer to do the software. Mouse down and do his Pi net design. Bet theres others, on the net. http://w
/archives//html/Amps/2021-08/msg00019.html (11,350 bytes)

173. Re: [Amps] Amp With A Roller Inductor? (score: 1)
Author: RCM <robrk@nidhog.net>
Date: Mon, 13 Sep 2021 17:09:44 -0400
You do the math or measure the coils inductance and per the plate load impedance, pick your taps. You will be using a turns counter dial. Write down the numbers for each band. Chart on panel. Do tun
/archives//html/Amps/2021-09/msg00009.html (9,035 bytes)

174. Re: [Amps] MLA-2500 Tube Conversion (score: 1)
Author: Nidhog <robrk@nidhog.net>
Date: Sun, 10 Oct 2021 14:06:27 -0400
Even if you have the correct output filament transformer, check the primary. I have a few from the olden days of 115 line voltage. 4CX250s want 6.000. My 30L1 wants 115/230, not todays 120/240 +. The
/archives//html/Amps/2021-10/msg00008.html (7,255 bytes)

175. Re: [Amps] 8877 (score: 1)
Author: RCM <robrk@nidhog.net>
Date: Mon, 24 Jan 2022 17:55:43 -0500
My feeble brain seems to remember issues with 8877s, in the 80s. Serial numbers or date codes. Might be worth a search, if cleaning out a basement. _______________________________________________ Am
/archives//html/Amps/2022-01/msg00075.html (7,137 bytes)

176. Re: [Amps] Gigavac GH1 mounting bracket (score: 1)
Author: Nidhog <robrk@nidhog.net>
Date: Tue, 8 Feb 2022 23:39:19 -0500
https://www.harborfreight.com/search?q=tap%20and%20die%20set Sent from my iPad _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailma
/archives//html/Amps/2022-02/msg00006.html (8,394 bytes)

177. Re: [Amps] HF2500 - 15 meter problem (score: 1)
Author: "R.Morris" <robrk@nidhog.net>
Date: Fri, 26 Aug 2022 20:14:52 -0400
Ameritron, MFJ will sell parts. Sent from my iPhone _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2022-08/msg00040.html (15,722 bytes)

178. Re: [Amps] 10 kw CCS on 6M. Part-3 (score: 1)
Author: Nidhog <robrk@nidhog.net>
Date: Fri, 9 Sep 2022 19:45:52 -0400
For the same reason you need a 900hp Corvette. Sent from my iPad _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amp
/archives//html/Amps/2022-09/msg00003.html (9,689 bytes)

179. Re: [Amps] Requesting opinions on a Drake L-4b's tubes (score: 1)
Author: Nidhog <robrk@nidhog.net>
Date: Fri, 23 Dec 2022 20:27:57 -0500
An extra good method, go to cw, run dots about 20 wpm and tune for max. Do a carrier (rtty), check meters, run load knob clockwise, drop power a few watts and watch Ig drop in half. Remember these am
/archives//html/Amps/2022-12/msg00104.html (12,575 bytes)

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