- 1. Re: [Amps] our amplifier in 2010 CQWW (score: 1)
- Author: David Robbins <k1ttt@verizon.net>
- Date: Tue, 09 Nov 2010 09:49:51 -0600 (CST)
- cqww has started a program of on-site inspections, so yes they are looking for things like that. And of the serious contesters i know none of them run excess power. A US magazine trying to dictate to
- /archives//html/Amps/2010-11/msg00091.html (15,800 bytes)
- 2. Re: [Amps] QRO is alive and well..in Greece (score: 1)
- Author: David Robbins <k1ttt@verizon.net>
- Date: Mon, 15 Nov 2010 08:44:22 -0600 (CST)
- is this the guy that was trying to figure out how to stop feedback in his 'pll' transmitter?? note on the page that it is specifically listed as a pll synthesized AM transmitter. http://5-19lamia.blo
- /archives//html/Amps/2010-11/msg00245.html (8,539 bytes)
- 3. Re: [Amps] HV resistor source (score: 1)
- Author: David Robbins <k1ttt@verizon.net>
- Date: Wed, 17 Apr 2013 06:31:03 -0500 (CDT)
- a 50 ohm 25w resistor only needs to handle 35v terminal to terminal... the rest you have to handle by providing proper clearance for mounting it. So where does one find a 30 to 50 ohm 25 watt resisto
- /archives//html/Amps/2013-04/msg00154.html (7,798 bytes)
- 4. Re: [Amps] Command Technologies VHF 1200 (score: 1)
- Author: David Robbins <k1ttt@verizon.net>
- Date: Tue, 14 May 2013 12:32:08 -0500 (CDT)
- assuming that is similar to their other amps, check the control board for probably a 1a fuse and make sure it is still ok... that is the cathode return fuse that blows in case of a tube arc or power
- /archives//html/Amps/2013-05/msg00155.html (8,747 bytes)
- 5. [TowerTalk] commander hf-2500e (score: 1)
- Author: "David Robbins" <k1ttt@verizon.net>
- Date: Sun, 17 Jun 2018 07:58:35 -0500
- I'm looking for a manual for the commander version of the hf-2500 export model amp. Not the one that palstar made after they bought the command technologies line. Anyone know of any around?? ________
- /archives//html/Amps/2018-06/msg00022.html (7,127 bytes)
- 6. Re: [Amps] When to leave the amp on vs turn off. (score: 1)
- Author: "David Robbins" <k1ttt@verizon.net>
- Date: Mon, 27 Aug 2018 09:06:24 -0500
- I leave my so2r/remote access amp on unless it is not going to be used for at least 24 hours... that means unless I know no remote user is expecting to use it and/or there is a low power contest over
- /archives//html/Amps/2018-08/msg00048.html (9,754 bytes)
- 7. [Amps] FW: Ameritron Al-1500 excessived grid current & shut down (score: 1)
- Author: "David Robbins" <k1ttt@verizon.net>
- Date: Mon, 27 Aug 2018 11:30:19 -0500
- Look for a blown fuse on the b- side of the hv supply... usually 2a and may be on control or bias circuit board. could also be bias circuit fault. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net we
- /archives//html/Amps/2018-08/msg00055.html (8,922 bytes)
- 8. [Amps] stuff forsale! (score: 1)
- Author: "David Robbins" <k1ttt@verizon.net>
- Date: Sun, 14 Oct 2018 10:52:42 -0500
- A couple amps, and other stuff... Commander HF-2500 amp s/n 443 = $1200 plus shipping All band this vintage does NOT have grid protection Commander HF-2500 amp s/n 698 = $1200 plus shipping modified
- /archives//html/Amps/2018-10/msg00040.html (7,935 bytes)
- 9. Re: [Amps] stuff forsale! (score: 1)
- Author: "David Robbins" <k1ttt@verizon.net>
- Date: Tue, 16 Oct 2018 08:04:37 -0500
- They 'might' be ok on 160m, there are no big rtty contests on that band so haven't actually tested one there. The problem with 40m and 80m is due to the shorted turns on the toroid creating lots of h
- /archives//html/Amps/2018-10/msg00047.html (9,765 bytes)
- 10. Re: [Amps] Which amp for legal limit RTTY? (score: 1)
- Author: "David Robbins" <k1ttt@verizon.net>
- Date: Tue, 16 Oct 2018 08:43:52 -0500
- Commander hf-2500's work ok on the high bands, just don't use them on the low bands without modification of the toroid. ACOM 2000a will also do fine, they do have an add on fan to help a bit if you a
- /archives//html/Amps/2018-10/msg00052.html (8,052 bytes)
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