- 141. Re: [Amps] HV transformer and Variac (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Fri, 24 Jul 2015 12:38:16 -0600
- Gerald, I just saw your post and Ron's comments are in line with what I believe happens. We know for a fact that a turn or 2 are connected together by the wiper. If that was not the case there would
- /archives//html/Amps/2015-07/msg00118.html (13,548 bytes)
- 142. Re: [Amps] Arco 30 Series Trimmer Cap Nuts (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Mon, 1 May 2017 01:16:06 -0600
- 12-24 is national fine I think and 12-40 is national extra fine and I have 2 sets with this tap and a die. 12-40 is definitely the correct thread for the Arco 30X trimmers 73, Larry, W0QE <Does anyon
- /archives//html/Amps/2017-05/msg00006.html (8,748 bytes)
- 143. Re: [Amps] Tunned Input (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Tue, 16 May 2017 21:33:14 -0600
- The calculator below gives incorrect results: For example Zsource = 50+j0, Zload=30+j0, Q=2.5, Freq = 14MHz produces C(source side) = 413pF, L = .716uH, & C(load side) = 320pF which does NOT match Th
- /archives//html/Amps/2017-05/msg00163.html (9,029 bytes)
- 144. Re: [Amps] LDMOS availability (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Mon, 5 Jun 2017 18:40:26 -0600
- Bruce, The MRF-150 came out in 1983/84 and Helge Granberg produced the Motorola app not EB-104 using the XRF-150 in the same year. It is still readily available. Be careful with your FACTS! Larry, W0
- /archives//html/Amps/2017-06/msg00069.html (13,670 bytes)
- 145. Re: [Amps] Ten-Tec Titan 10 Meter Input SWR (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Sun, 11 Jun 2017 10:57:45 -0600
- Cathy, I have an entire YouTube channel with over 30 videos to date showing how the free program SimSmith can calculate these types of problems very easily. The graphical output of SimSmith makes und
- /archives//html/Amps/2017-06/msg00161.html (11,202 bytes)
- 146. Re: [Amps] Ten-Tec Titan 10 Meter Input SWR (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Sun, 11 Jun 2017 16:33:19 -0600
- Gerald, I have done this exact problem this many times for a high power ISM application at 13.56MHz. 1.) For example put an "L" network between the amp and the exciter. 2.) Adjust the "L" network for
- /archives//html/Amps/2017-06/msg00175.html (12,282 bytes)
- 147. Re: [Amps] Thread size for UHF connectors? (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Wed, 7 Mar 2018 10:41:06 -0700
- Thread size is 5/8-24 and is the same for N and UHF connectors. McMaster Carr and MSC sell taps and dies in this size. Larry, W0QE I want to thread a grounding plate which will save me one fitting an
- /archives//html/Amps/2018-03/msg00020.html (8,652 bytes)
- 148. Re: [Amps] Flex Power Genius XL 2KW amplifier (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Sat, 6 Oct 2018 13:42:00 -0600
- Download the 40 series datasheet @ https://www.findernet.com/en/unitedstates/products/families/18/series/40/documents Specs say 2ms release and 5ms operate as typical numbers. The relays look like c
- /archives//html/Amps/2018-10/msg00018.html (11,060 bytes)
- 149. Re: [Amps] Input relay for QSK amp (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Tue, 4 Dec 2018 08:57:56 -0700
- Victor, I have made a lot of RF measurements on small relays at power levels up to 400w. I have also measured operate and release times. http://www.w0qe.com/Technical_Topics/small_signal_relays_at_r
- /archives//html/Amps/2018-12/msg00021.html (9,293 bytes)
- 150. Re: [Amps] Impedance Match Calculator (score: 1)
- Author: Larry Benko <xxw0qe@comcast.net>
- Date: Sun, 3 Feb 2019 14:58:12 -0700
- Dick, You want the answer for lossless or real components? For lossless components starting at the generator a shunt capacitor of 831.93pF and then a series inductor of 269.96nH to the load will mat
- /archives//html/Amps/2019-02/msg00014.html (8,857 bytes)
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