- 141. Re: [Amps] Future of RF AMPS (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Wed, 11 Sep 2013 16:05:50 -0400
- None of the Communications Concepts two amplifier combiners are rated at 2 KW. They show 4 amplifier (4 port) devices for 2 and 5 KW but the only high power 2 port combiner is rated for only 1 KW. Wh
- /archives//html/Amps/2013-09/msg00041.html (14,070 bytes)
- 142. Re: [Amps] Future of RF AMPS (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Wed, 11 Sep 2013 17:29:54 -0400
- It's probably easier to build a broadband Wilkinson divider and combiner as used in the Quadra. 73, ... Joe, W4TV They make custom transformers and combiners, so I am sure they could make a 2 port co
- /archives//html/Amps/2013-09/msg00050.html (15,446 bytes)
- 143. Re: [Amps] S/S Amp's (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Thu, 12 Sep 2013 14:29:42 -0400
- For the same reason they spam other bands with ESSB, IM products, keyclicks, splatter and/or full carrier AM - because they can and the rules against stupidity, and bad operating practices either do
- /archives//html/Amps/2013-09/msg00084.html (8,251 bytes)
- 144. Re: [Amps] Future of RF AMPS (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Fri, 13 Sep 2013 11:48:43 -0400
- 1200 watts with those services in fine in saturated single carrier modes (FM, CW, FSK, JT65/JT9) but will be an IMD nightmare in linear operation (SSB). I doubt those devices will be clean above 800W
- /archives//html/Amps/2013-09/msg00125.html (13,976 bytes)
- 145. Re: [Amps] HL-1.5Kfx Band Data Cable for Ten Tecs (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Sat, 05 Oct 2013 08:43:10 -0400
- TenTec (Orion, Orion II) band data outputs (one for each antenna jack) are open collector, active low, one line per band. In order to drive an HL-1.5kfx one would probably need to build a one of 10 t
- /archives//html/Amps/2013-10/msg00038.html (7,640 bytes)
- 146. Re: [Amps] YAESU VL-1000 Production De-Coder Ring (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Sat, 19 Oct 2013 20:20:36 -0400
- All Yaesu serial numbers are of the same format: Serial Numbers - Decoding Serial number format is YMLLUUUU where Y is the last digit of the year, M is the month with C = Jan, D = Feb and so on, LL i
- /archives//html/Amps/2013-10/msg00348.html (7,800 bytes)
- 147. Re: [Amps] Initial RF testing of 4CX1000A amplifier (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Wed, 06 Nov 2013 14:51:12 -0500
- Try: http://www.bocatechinc.com 73, ... Joe, W4TV Your keyboard misspell something ?? Simpson meters are really nice but a little pricey for ham use. There are imported Simpson knockoffs available fr
- /archives//html/Amps/2013-11/msg00074.html (9,035 bytes)
- 148. Re: [Amps] Looking for picture of SB220 interlock switch (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Wed, 06 Nov 2013 23:20:44 -0500
- While it may destroy your power supply it can save your life. The best solution is to *add* the primary interlock switches and leave the crowbar in place. Disconnecting the primary before or at the
- /archives//html/Amps/2013-11/msg00092.html (10,367 bytes)
- 149. Re: [Amps] Looking for picture of SB220 interlock switch (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Thu, 07 Nov 2013 11:19:35 -0500
- Yes, and putting a body around motorcycles would save thousands of injuries/deaths a year. I'm not about to strip the body off my automobile and drive it on the interstate. Saving a few minutes in ch
- /archives//html/Amps/2013-11/msg00105.html (12,814 bytes)
- 150. Re: [Amps] where to begin (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Thu, 07 Nov 2013 16:40:47 -0500
- Only if one is already technically competent to know the difference between sound engineering principles and snake oil. That web site is full of traps for the beginning amplifier builder. 73, ... Joe
- /archives//html/Amps/2013-11/msg00112.html (14,276 bytes)
- 151. Re: [Amps] Looking for picture of SB220 interlock switch (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Thu, 07 Nov 2013 18:28:29 -0500
- No, recommending the removal of protective devices and removing them in amplifiers you service is ridiculous. I know that any technician in a broadcast environment who removed crowbars or other safet
- /archives//html/Amps/2013-11/msg00125.html (14,217 bytes)
- 152. Re: [Amps] Non-linear linear (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Sat, 01 Feb 2014 09:38:00 -0500
- output share the same bandswitch.. yet use different wafers. Two separate switchs, one below the chassis and one above the chassis.. and driven by a plastic chain is nomal..or a relay scheme etc. SB
- /archives//html/Amps/2014-02/msg00002.html (9,496 bytes)
- 153. Re: [Amps] AL-1200 T/R problem (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Sat, 01 Feb 2014 11:52:29 -0500
- It was any fresh bill ... generally stated as a $10, $20, $50, etc. because the higher denominations were likely to have less use. Most of us had all we needed on a day to day basis with pocket full
- /archives//html/Amps/2014-02/msg00004.html (7,719 bytes)
- 154. Re: [Amps] L4-B (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Mon, 31 Mar 2014 21:38:38 -0400
- They were used the both the plate blocker and screen bypass in the RCA F and G lines of VHF TV transmitters IIRC - but that was a lifetime ago. I certainly remember changing them when rebuilding PA c
- /archives//html/Amps/2014-03/msg00204.html (12,886 bytes)
- 155. Re: [Amps] 3-500Zs inverted (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Thu, 03 Apr 2014 09:51:56 -0400
- From the data sheet: "The 3-500Z must be operated vertically, base up or down." 73, ... Joe, W4TV _______________________________________________ Amps mailing list Amps@contesting.com http://lists.co
- /archives//html/Amps/2014-04/msg00024.html (6,889 bytes)
- 156. Re: [Amps] B&W PT-2500A on 10m? (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Thu, 03 Apr 2014 17:48:37 -0400
- Both references suggest adding a single 133pf (100pf & 33pf in parallel) cap with a coil of 6t of 18ga wire, loose spaced (about 5/8" long ) on .500" diameter. However, this yields a C-L only solutio
- /archives//html/Amps/2014-04/msg00036.html (10,810 bytes)
- 157. Re: [Amps] FTDX5KMP to ICOM PW-1 Interface (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Thu, 10 Apr 2014 18:21:22 -0400
- Well, if you're willing to tie up a computer and have it on every time your want to use the rig, you can use an Icom CT-17 and the "Secondary CAT Serial Port" in CI-V Commander from DXLab Suite. As f
- /archives//html/Amps/2014-04/msg00127.html (7,474 bytes)
- 158. Re: [Amps] AL572 for DXpedition, parts to take along (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Wed, 16 Apr 2014 17:30:49 -0400
- A full set of power supply caps and the equalizing resistors, A spare set of rectifier diodes (as an alternative - consider a complete power supply board) spare set of parasitic suppressors a spare m
- /archives//html/Amps/2014-04/msg00150.html (9,841 bytes)
- 159. Re: [Amps] Filament Voltage Question (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Tue, 22 Apr 2014 11:33:55 -0400
- Perhaps because the low voltage, high current filament is more physically rugged? 73, ... Joe, W4TV On 4/22/2014 11:19 AM, Jim Garland wrote: I was reading the data sheet this morning on the 4CX3500A
- /archives//html/Amps/2014-04/msg00188.html (7,576 bytes)
- 160. Re: [Amps] complicated Bias circuit (score: 1)
- Author: "Joe Subich, W4TV" <lists@subich.com>
- Date: Sun, 04 May 2014 22:27:19 -0400
- The bias supply is *negative* DC ... where do you expect to get it other than a separate low voltage supply? This bias supply is hardly complicated ... it is a scaled copy of the circuit used in man
- /archives//html/Amps/2014-05/msg00006.html (8,598 bytes)
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