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121. [Amps] Arnold Howell contact info.. for YC-156's + pole pigs (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sat, 27 Mar 2010 05:33:35 -0700
The last I heard, Arnold Howell had 24-26 x YC-156's left... and also had access to 4160/4800 vac hypersil pole pigs in the 5/10/15/25 kva variety... with or without oil. Dunno if he still has the ma
/archives//html/Amps/2010-03/msg00682.html (7,733 bytes)

122. [Amps] Another source for YC-156's (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sat, 27 Mar 2010 05:54:56 -0700
Norm Hockler N8NH was another good source for YC-156's I think the other tube that's virtually identical to the 156.. is called a YC-179. I don't have Norm's e mail or ph number. At one time he had a
/archives//html/Amps/2010-03/msg00683.html (6,753 bytes)

123. Re: [Amps] 'good engineering' (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sat, 27 Mar 2010 08:26:52 -0700
&&& "nonsense, I always operate legally" Are you happy now ? && Nice amp Bill. Are you sure it only runs the legal limit ? How many 8877's are inside? If that 4:1 balun on your X-7 ever gives you trb
/archives//html/Amps/2010-03/msg00688.html (14,086 bytes)

124. [Amps] (no subject) (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sun, 28 Mar 2010 06:04:53 -0700
REPLY: So THAT is where all this voodoo comes from! I wonder what Orr would have thought of the disk experiment we just did. Twice. You are right though, I will have to GET ONE OF HIS BOOKS. Like I s
/archives//html/Amps/2010-03/msg00713.html (9,353 bytes)

125. [Amps] Arnold howell contact info. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sun, 28 Mar 2010 06:13:23 -0700
I emailed with a good friend of mine who is a broadcast engineer in Youngstown. Two thumbs up on Arnold as FB for good tubes. 73, Tim K3LR from him, and no problems at all. I got Howells ph number fr
/archives//html/Amps/2010-03/msg00715.html (7,544 bytes)

126. [Amps] Ripple in B+ supply. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sun, 28 Mar 2010 06:34:40 -0700
REPLY: Ok,that works if you're equipped to measure the true RMS value of a sawtooth wave. I suspect most hams are not. Using a non-true RMS meter, who knows what you'll get. Did the handbook mention
/archives//html/Amps/2010-03/msg00718.html (8,600 bytes)

127. [Amps] 'good engineering' (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sun, 28 Mar 2010 06:43:14 -0700
Coupled to all those antennas, no wonder you are loud. David G3UNA the slammer about now.. for 'ethic's... and 'un-gentlemanly behaviour'. Jim VE7RF _______________________________________________ Am
/archives//html/Amps/2010-03/msg00719.html (8,006 bytes)

128. [Amps] 'good engineering' (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sun, 28 Mar 2010 07:42:18 -0700
Tell me guys. Who's idiot enough to build a 5 kilowatt amplifier and use it at the 1,5 kW level? Are we kidding ourselves or not? Alex 4Z5KS pole pig for $75.00 New Eimac 8877 for $1300.00 or a YC-15
/archives//html/Amps/2010-03/msg00720.html (11,049 bytes)

129. [Amps] 7-16 Din connectors'. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Tue, 30 Mar 2010 02:14:20 -0700
LMR-600 and 7/16ths connectors should do it through HF, or get some surplus 7/8" heliax. More than likely even PL259's would be sufficient for 5KW. 73 Roger (K8RI) connector! The 7-16 means 7mm /16mm
/archives//html/Amps/2010-03/msg00849.html (9,859 bytes)

130. [Amps] YC-156 vs 8877 (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Tue, 30 Mar 2010 03:16:33 -0700
Refresh my memory, that YC-156 is NOT an 8877, right? Lane Ku7i The original 3CPX 15,000B7 came with a 8.32" cooler. The tube is rated for 3.75A CCS @ 6500 vdc. The integral grid flange is 5.25" diam
/archives//html/Amps/2010-03/msg00851.html (8,324 bytes)

131. [Amps] LCR meter (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Tue, 30 Mar 2010 03:58:06 -0700
I am curious as to what you guys are using to measure the L and C of your circuits/components. I looked at the B & K 875-B and it can be had for $192.00 on Amazon dot com. I do not know if this is re
/archives//html/Amps/2010-03/msg00852.html (9,919 bytes)

132. [Amps] 1/4 wave shorted stubs on amp output (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Tue, 30 Mar 2010 04:22:21 -0700
Has anyone seen anything in print about using a lambda/4 (Quarter wavelength) stub on the output of an amplifier with a tube. Its a nice way to bring water, tuning mechanisms into an output circuit,
/archives//html/Amps/2010-03/msg00853.html (8,292 bytes)

133. [Amps] LCR meter. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Wed, 31 Mar 2010 04:06:27 -0700
dismal results. A 10 uh commercially made roller inductor, wound with 1/4" tubing... measures exactly 10 uh on my B+K 875-B lcr meter. Same deal on my 50 uh roller. When the mfj was used, the same co
/archives//html/Amps/2010-03/msg00936.html (10,562 bytes)

134. [Amps] LCR meter (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Thu, 1 Apr 2010 03:14:44 -0700
The AADE instrument is more than adequate for all practical purposes. It's nice to have variable frequency option, but in any case, at the higher frequencies, the influence of unpredictable strays in
/archives//html/Amps/2010-04/msg00001.html (10,285 bytes)

135. [Amps] lcr meter (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Thu, 1 Apr 2010 06:56:18 -0700
)Yeah, if you call 9.99 to 10.09 anything ! And then you DON'T even guess how much stray inductance you added when you soldered it in with unknown length pigtails!! else. 3/8" wide. HT-57's. the wire
/archives//html/Amps/2010-04/msg00005.html (8,306 bytes)

136. [Amps] LCR mteter. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Fri, 2 Apr 2010 00:23:16 -0700
REPLY: I have to disagree on not using it to set taps on a tank coil. When connected in reverse, i.e. connecting it to the output of a pi-net, with a non-inductive resistor of the appropriate value f
/archives//html/Amps/2010-04/msg00017.html (12,035 bytes)

137. [Amps] More LCR mters and meaurements. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Fri, 2 Apr 2010 00:53:44 -0700
Those that are used more are the ones that are quickest to grab and use and are not necessarily the most accurate. on a wooden bench. I measure exactly 24.0 pf on the 875. Eimac sez the YU-148 is sup
/archives//html/Amps/2010-04/msg00018.html (11,263 bytes)

138. [Amps] LCR Meter (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sat, 3 Apr 2010 06:02:15 -0700
REPLY: You say "not a chance Bill" and then you say you do exactly what I do. What do you mean by "not a chance Bill"? select taps based on uh readings from any mfj, when mfj used to measure uh. Seco
/archives//html/Amps/2010-04/msg00029.html (11,358 bytes)

139. [Amps] LCR Meter (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sun, 4 Apr 2010 04:29:34 -0700
REPLY: If you are using a low frequency C meter, the plate choke will be pretty close to a short and will not contribute the reactance it will at the operating frequency. If you are doing the procedu
/archives//html/Amps/2010-04/msg00069.html (10,657 bytes)

140. [Amps] Subject header (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sun, 4 Apr 2010 04:41:59 -0700
Leaving the original subject header is a 2 x edged sword. If u do a search for say... "sb-220 bandswitch" the post will start with sb-220 band switch issues. This then immediately goes off on a tange
/archives//html/Amps/2010-04/msg00071.html (6,977 bytes)

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