Search String: Display: Description: Sort:

Results:

References: [ +from:km1h@juno.com: 1318 ]

Total 1318 documents matching your query.

121. [AMPS] CW amplifier progress (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Wed, 17 Mar 1999 09:09:43 -0500
On Mon, 15 Mar 1999 20:18:26 -0800 Vic Rosenthal <rakefet@rakefet.com> writes: If I want something real bad I use the telephone. Even $250, which is pretty much a standard price, for a good 8877 is n
/archives//html/Amps/1999-03/msg00370.html (8,048 bytes)

122. [AMPS] Chokes and Dipping chokes? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Wed, 17 Mar 1999 09:30:06 -0500
On Tue, 16 Mar 1999 00:55:55 -0800 Rich Measures <measures@vc.net> writes: Yes I can. Will you explain how an unshorted choke will show series resonances? Later Carl _________________________________
/archives//html/Amps/1999-03/msg00371.html (10,769 bytes)

123. [AMPS] Re: [Amps] CW Amplifier progress (well, daydream progress) -- long (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Wed, 17 Mar 1999 10:14:02 -0500
On Tue, 16 Mar 1999 08:01:08 -0800 Vic Rosenthal <rakefet@rakefet.com> writes: QRO seldom is quiet Vic. Of course you can run a YC-156 and a muffin fan at QRP levels! The brand new SB-220 fan assy fr
/archives//html/Amps/1999-03/msg00372.html (9,192 bytes)

124. [AMPS] Chokes and Dipping chokes? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Thu, 18 Mar 1999 10:13:05 -0500
On Wed, 17 Mar 1999 08:38:46 -0800 Rich Measures <measures@vc.net> writes: I have tried that, many times over the years. As I said earlier it is a hit and miss approach and repeatable results are not
/archives//html/Amps/1999-03/msg00417.html (9,827 bytes)

125. [AMPS] HV connectors again... (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Thu, 18 Mar 1999 11:13:34 -0500
With a Teflon SO-239 and PL-259 you probably can BUT ....!! I'm getting final quotes from Alden on a set of real connectors rated at least 15KV along with HV wire. Prices look like they will be under
/archives//html/Amps/1999-03/msg00418.html (8,871 bytes)

126. [AMPS] Follow Up on the SB-220 Follow UP (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Thu, 18 Mar 1999 11:32:23 -0500
So we can first eliminate voodoo parasitics. Immediately after the loud I opt for the Heath original. ground the grids directly or apply someone The bis diodes on the Harbach board have always been a
/archives//html/Amps/1999-03/msg00419.html (12,290 bytes)

127. [AMPS] More on the SB220 (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Thu, 18 Mar 1999 12:04:39 -0500
An arc in a vacuum would not go BANG. Neither would the opening of a 2W resistor. Sounds like a HV breakdown to me that is external to the tube. Off to work; be back in 11 hours.... 73 Carl KM1H ____
/archives//html/Amps/1999-03/msg00424.html (9,873 bytes)

128. [AMPS] More on the SB220 (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Thu, 18 Mar 1999 12:01:31 -0500
Are you sure that one or more of the bias diodes did not short? That is a common failure mode. Heath manual calls I prefer a 2 or 3W metal oxide which can handle momentary overloads without opening a
/archives//html/Amps/1999-03/msg00425.html (10,983 bytes)

129. [AMPS] Chokes and Dipping chokes? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Thu, 18 Mar 1999 11:55:34 -0500
Expected result which can lead to inaccurate measurements. Unknown. What was the in ckt reading with the pi-net resonated on 15M and then with it resonated elsewhere? Or simply detuned. What brand is
/archives//html/Amps/1999-03/msg00426.html (11,172 bytes)

130. [AMPS] Follow Up on the SB-220 Follow UP (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 00:10:22 -0500
That idle current is trying to tell you something. Stop, think and look. Is the HV really OK? What is the idle current, one tube at a time. Something is not correct here. They have no bearing on the
/archives//html/Amps/1999-03/msg00463.html (10,265 bytes)

131. [AMPS] Instant ON.. (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 01:25:17 -0500
How do you do it ???? 73 Carl KM1H -- ___________________________________________________________________ You don't need to buy Internet access to use free Internet e-mail. Get completely free e-mail
/archives//html/Amps/1999-03/msg00464.html (8,880 bytes)

132. [AMPS] Chokes and Dipping chokes? (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 01:32:19 -0500
On Thu, 18 Mar 1999 11:12:30 -0800 Rich Measures <measures@vc.net> writes: Not in the real world (- : Carl ___________________________________________________________________ You don't need to buy In
/archives//html/Amps/1999-03/msg00465.html (9,659 bytes)

133. [AMPS] Follow Up on the SB-220 Follow UP (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 00:58:36 -0500
On Thu, 18 Mar 1999 15:08:52 -0500 "Gilmer, Mike" <mgilmer@gnlp.com> writes: I have asked several times for a spectrum analyzer photo of voodoo parasitics. Guess what, I'm still waiting. I have never
/archives//html/Amps/1999-03/msg00466.html (10,755 bytes)

134. [AMPS] 3cx1200 (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 00:15:44 -0500
NO. What happens if you just run idle current for say 10 minutes? Any change? That is not the symptom of a tube arc. Does that amp have a HV glitch resistor? Sounds like a PS problem, something not e
/archives//html/Amps/1999-03/msg00467.html (9,069 bytes)

135. [AMPS] Follow Up on the SB-220 Follow UP (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 01:31:47 -0500
On Thu, 18 Mar 1999 14:40:26 -0800 Rich Measures <measures@vc.net> writes: So now by more voodoo and magic we go from the SB-220 to 8875's which I assume were removed from a MLA-2500. Rich, can you e
/archives//html/Amps/1999-03/msg00468.html (10,597 bytes)

136. [AMPS] Instant ON.. (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 01:22:45 -0500
On Thu, 18 Mar 1999 18:48:02 +0100 Peter Sundberg <sm2cew@telia.com> writes: I believe it has been established here several times by amp mfg reps that the life of an indirectly heated transmit tube w
/archives//html/Amps/1999-03/msg00469.html (11,507 bytes)

137. [AMPS] Power Supply Progress & a question (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 02:07:27 -0500
You forgot to mention the transformer ratings........... Readings are meaningless without a KVA reference. 73 Carl KM1H 73 Carl KM1H __________________________________________________________________
/archives//html/Amps/1999-03/msg00470.html (9,622 bytes)

138. [AMPS] More on the SB220 (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 02:07:12 -0500
I take it that you are not familiar with the SB-220 circuit. The resistor in question is not in the HV path at all. 73 Carl KM1H ___________________________________________________________________ Yo
/archives//html/Amps/1999-03/msg00471.html (10,215 bytes)

139. [AMPS] CW amplifier tubes (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 10:49:36 -0500
On Thu, 18 Mar 1999 21:43:53 -0800 Vic Rosenthal <rakefet@rakefet.com> writes: Too bad I tossed that phone #. A pair of Whats Ameritron getting for new ones? The 8877 can get along fine with a five b
/archives//html/Amps/1999-03/msg00486.html (10,953 bytes)

140. [AMPS] More on the SB220 (score: 1)
Author: km1h@juno.com (km1h@juno.com)
Date: Fri, 19 Mar 1999 14:59:29 -0500
On Fri, 19 Mar 1999 03:04:26 -0800 Rich Measures <measures@vc.net> writes: Not when used in a grid ckt. Virtual what? 73 Carl KM1H ___________________________________________________________________
/archives//html/Amps/1999-03/msg00495.html (10,137 bytes)

Current List: 121 - 140
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20]
This search system is powered by Namazu