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121. Re: [Amps] SELL: Heat Dissipating 8877 HV Plate Caps (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sat, 25 Aug 2007 09:12:09 -0400
You and Ron are free to do whatever you want including ripping off the gullible. If either one of you is able enough to read the specs you will find out that Eimac cautions AGAINST using that decorat
/archives//html/Amps/2007-08/msg00177.html (8,705 bytes)

122. Re: [Amps] Future Amp Buyer Questions (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sun, 26 Aug 2007 14:56:53 -0400
My feeling is that any 811A amp is a bad choice for RTTY. The 811A has only 65 Watts dissapation per tube and RTTY is a continuous carrier signal. The AL-811 is not an overly efficient amp so the max
/archives//html/Amps/2007-08/msg00192.html (11,512 bytes)

123. Re: [Amps] SB-200 circuit breakers (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sun, 26 Aug 2007 20:28:18 -0400
Three possibilities come to mind. - Defective breaker. Possible but quite rare. - Leaky filter caps. A very good possibility if they are original. Leave the amp on for a half hour or so and then shut
/archives//html/Amps/2007-08/msg00197.html (9,427 bytes)

124. Re: [Amps] SB-200 circuit breaker (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sun, 26 Aug 2007 23:08:55 -0400
Thats because they are running close to max ratings. Replacing them with 75K will cut down on the heat and give adequate equalizing. The bleed down will take a bit longer. Heat kills electrolytics. C
/archives//html/Amps/2007-08/msg00200.html (8,112 bytes)

125. Re: [Amps] SB-200 circuit breakers (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sun, 26 Aug 2007 23:20:17 -0400
Hmmm, Im not a fan of the Taylor label, Ive had several problems with them right out of the box. Im not sure how many Chinese factories are producing 572B's and prints which label. Leave the perforat
/archives//html/Amps/2007-08/msg00201.html (12,140 bytes)

126. Re: [Amps] SB-200 circuit breakers (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Mon, 27 Aug 2007 11:54:08 -0400
There are some errors in your explanation also. If a tube is taking off as an unneutralized oscillator it wont usually pop anything except the breaker. Therefore my suggestion to take the cover off a
/archives//html/Amps/2007-08/msg00211.html (11,480 bytes)

127. [Amps] Regulation issues when using a Variac (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Wed, 29 Aug 2007 16:18:13 -0400
I rember that this was discussed some time ago but couldnt find it. I would like to use one big PS (5 KV@ 2A CCS) left over from an old AM BC TX to run several amps with different HV requirements. Th
/archives//html/Amps/2007-08/msg00247.html (6,639 bytes)

128. Re: [Amps] Silicon rubber chimneys (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Wed, 29 Aug 2007 19:02:30 -0400
McMaster-Carr carries the material in several dielectric grades. Aint cheap Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com
/archives//html/Amps/2007-08/msg00249.html (9,826 bytes)

129. Re: [Amps] Mil-Spec Fil Xfmr performance (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sat, 1 Sep 2007 09:36:55 -0400
When I was still a teenager I used a BC-610 plate transformer for a pair of 250TH's and it never got to what I'd call hot. This was in a basement that never got much above 60-65F. However I did doubl
/archives//html/Amps/2007-09/msg00002.html (7,391 bytes)

130. Re: [Amps] Blowers for metal-ceramic tubes (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Sat, 1 Sep 2007 19:22:00 -0400
Good work Ian. Carl KM1H _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2007-09/msg00005.html (7,918 bytes)

131. [Amps] Anyone need Rohn 45G in the Northeast? (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Mon, 3 Sep 2007 10:29:31 -0400
Ebay item 330160501907 is 120' of the stuff on the ground in the Buffalo area. I need 40'. I can also swap a regular pointed top section for a 2" mast if you dont want the windmill top section. I als
/archives//html/Amps/2007-09/msg00021.html (6,602 bytes)

132. Re: [Amps] crossmodulation in PA ? (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Wed, 5 Sep 2007 12:36:09 -0400
My experience with commercial VHF/UHF sites when everything else has been tried has always been a non linearity diode joint in the guy system. Always at a cable clamp or guy grip with the guy anchor
/archives//html/Amps/2007-09/msg00029.html (10,876 bytes)

133. Re: [Amps] 4-400As as Subs for 3-500Z (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Wed, 5 Sep 2007 13:27:22 -0400
I wonder how many BC stations up to 5KW or so still use tubes. My 4-1000A sources around here dried up at least 10 years ago. Carl KM1H _______________________________________________ Amps mailing li
/archives//html/Amps/2007-09/msg00031.html (10,093 bytes)

134. Re: [Amps] crossmodulation in PA ? Thanks for all good advice (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Wed, 5 Sep 2007 17:41:17 -0400
Rectification can take place between any 2 pieces of metal. Non metallic guys use metal at their ends to connect to the tower and ground anchors. Nearby metal buildings, fences, flagpole, farm equipm
/archives//html/Amps/2007-09/msg00035.html (13,876 bytes)

135. Re: [Amps] AL1500 cooling mod? (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Thu, 6 Sep 2007 13:04:28 -0400
Why would the electrolytics in the AL-1500 require any special airflow since they are 105* C computer grade and meant to operate in a warm enviroment? You once claimed that those caps were a special
/archives//html/Amps/2007-09/msg00049.html (9,107 bytes)

136. Re: [Amps] AL1500 cooling mod? (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Thu, 6 Sep 2007 17:29:55 -0400
I never said that they should be run at that temperature. The fact that Ameritron was smart enough to buy that extra overhead compared to cheaper 85* C caps is a big plus. Thats been well publicized
/archives//html/Amps/2007-09/msg00057.html (10,331 bytes)

137. Re: [Amps] crossmodulation in PA (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 7 Sep 2007 10:10:45 -0400
Aboard USN ships RX and TX antennas were often parallel and only 30-60' apart. This was with WW2 and earlier technology. Transmitters were usually in the 500 to 2KW input range. TBK, TBM, TBL, FRT we
/archives//html/Amps/2007-09/msg00075.html (9,533 bytes)

138. Re: [Amps] crossmodulation in PA (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 7 Sep 2007 12:57:19 -0400
I didnt lose the pot but had to bypass the indicator lines in mine. It was at a past QTH, the 100' tower was shunt fed on 160 and a Christmas Tree of W2PV-4's were on top for loading. When I replaced
/archives//html/Amps/2007-09/msg00079.html (8,729 bytes)

139. Re: [Amps] TL-922A (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 14 Sep 2007 09:13:11 -0400
No problem, contesters and DXers have been doing that since it came out. The PS and cooling is adequate. Just dont do it on RTTY at full bore Carl KM1H _______________________________________________
/archives//html/Amps/2007-09/msg00143.html (7,324 bytes)

140. Re: [Amps] FL 2100 B (score: 1)
Author: "jeremy-ca" <km1h@jeremy.mv.com>
Date: Fri, 14 Sep 2007 10:18:59 -0400
Do the tubes draw normal idle current of around 90ma? What brand tubes? If Chinese or Svetlana has the bias supply mod been done? Shorted relay cable from exciter? Shorted/leaky C-5 Shorted/leaky C-2
/archives//html/Amps/2007-09/msg00144.html (7,933 bytes)

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