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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+Slow\s+start\-up\s+of\s+Amps\s+on\s+CW\s*$/: 30 ]

Total 30 documents matching your query.

1. [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Jeff in Mali: via Amps" <amps@contesting.com>
Date: Mon, 11 Mar 2024 14:57:01 +0000 (UTC)
Dear All: I find that on CW, I miss the first letter or two letters of people's call. I thought that it was just me not paying attention or half-deaf from too many years cutting grass as a kid with l
/archives//html/Amps/2024-03/msg00025.html (7,374 bytes)

2. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: David Gow <6146guy@gmail.com>
Date: Mon, 11 Mar 2024 10:19:33 -0700
Most modern transceivers have a menu setting that will delay the first letter transmission for a milliseconds after the amp has been switched to transmit. If the amplifiers have mechanical relays thi
/archives//html/Amps/2024-03/msg00026.html (8,968 bytes)

3. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "hzp_electronics@juno.com" <hzp_electronics@juno.com>
Date: Mon, 11 Mar 2024 17:40:15 GMT
Hi Jeff, I think there are multiple reasons for the first character missing at the beginning of a transmission with an amplifier. Number 1 reason: The sender is using an automatic band selection ampl
/archives//html/Amps/2024-03/msg00027.html (8,715 bytes)

4. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Mon, 11 Mar 2024 11:23:38 -0700
On 3/11/2024 7:57 AM, Jeff in Mali: via Amps wrote: However, more and more I'm convinced that some amps are not instantaneous, not picking up immediately as the first letter(s) is (are) keyed on CW o
/archives//html/Amps/2024-03/msg00028.html (8,305 bytes)

5. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Mon, 11 Mar 2024 11:33:08 -0700
On 3/11/2024 10:19 AM, David Gow wrote: Most modern transceivers have a menu setting that will delay the first letter transmission for a milliseconds after the amp has been switched to transmit. If t
/archives//html/Amps/2024-03/msg00029.html (8,876 bytes)

6. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Jeff in Mali: via Amps" <amps@contesting.com>
Date: Mon, 11 Mar 2024 19:05:37 +0000 (UTC)
Actually Bahamian stn from Spain.  On Monday, March 11, 2024 at 06:52:42 PM GMT, Jeff in Mali: <tz4am@aol.com> wrote: Then of course there is the famous Cayman station from Spain C6AAE.  On Monday, M
/archives//html/Amps/2024-03/msg00030.html (9,413 bytes)

7. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Jeff in Mali: via Amps" <amps@contesting.com>
Date: Mon, 11 Mar 2024 18:52:42 +0000 (UTC)
R/T delay is quite real. When contesting, I regularly hear JA calls as OA. It's not me mis-copying. 73, Jim K9YC _______________________________________________ Amps mailing list Amps@contesting.com
/archives//html/Amps/2024-03/msg00031.html (9,203 bytes)

8. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: Pete Smith N4ZR <pete.n4zr@gmail.com>
Date: Mon, 11 Mar 2024 15:29:26 -0400
On the other hand, there are workarounds available.  People started telling me that my callsign was being clipped soon after I got my KPA-1500 (my old SB-220 had homebrew QSK).  I found lead-time set
/archives//html/Amps/2024-03/msg00032.html (10,348 bytes)

9. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "hzp_electronics@juno.com" <hzp_electronics@juno.com>
Date: Mon, 11 Mar 2024 20:44:44 GMT
Hi Jeff, I think there are multiple reasons for the first character missing at the beginning of a transmission with an amplifier. Number 1 reason: The sender is using an automatic band selection ampl
/archives//html/Amps/2024-03/msg00033.html (11,141 bytes)

10. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Jeff in Mali: via Amps" <amps@contesting.com>
Date: Mon, 11 Mar 2024 21:58:05 +0000 (UTC)
Hi Bill: I've been pondering this question for a while, because it causes me problems in working pileups. I miss the first letter or two and then the people come back just once, so the same letter is
/archives//html/Amps/2024-03/msg00034.html (13,579 bytes)

11. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Jeff in Mali: via Amps" <amps@contesting.com>
Date: Mon, 11 Mar 2024 22:13:21 +0000 (UTC)
The problem is less for me than for the people I work in pileups:  I miss the first letter and the people only send once. I send a partial call sign. They send their call again once (with the first l
/archives//html/Amps/2024-03/msg00035.html (11,151 bytes)

12. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: Steve Thompson via Amps <amps@contesting.com>
Date: Mon, 11 Mar 2024 22:20:18 +0000
The bias point of the PA transistors can vary as they warm up, and the gain with it. That might account for variations on a timescale of 100s ms. Steve G8GSQ On 11/03/2024 21:58, Jeff in Mali: via Am
/archives//html/Amps/2024-03/msg00036.html (13,622 bytes)

13. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Jeff in Mali: via Amps" <amps@contesting.com>
Date: Mon, 11 Mar 2024 22:15:56 +0000 (UTC)
Bill: I only saw the issue once on my KPA 1500. I don't think it's a problem for me.  But on reception, because people only send their callsigns once, the second call often has the same issue as the
/archives//html/Amps/2024-03/msg00037.html (11,483 bytes)

14. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Jeff in Mali: via Amps" <amps@contesting.com>
Date: Mon, 11 Mar 2024 22:09:01 +0000 (UTC)
Hi Pete: Not worried so much about my settings, which I think are mostly OK, except for the one glitch which got me posting here. When I first was introduced to RBN, I saw all these spots for rare ca
/archives//html/Amps/2024-03/msg00038.html (12,142 bytes)

15. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: Dick NY1E <dick@ny1e.com>
Date: Tue, 12 Mar 2024 01:52:44 +0000 (UTC)
I just tried this on my amp, when auto band changing I send a single dit and no power out, after that all is normal. Once I'm on the right band it doesn't seem to cut off anything.de Dick NY1E "Numbe
/archives//html/Amps/2024-03/msg00039.html (8,609 bytes)

16. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Jeff in Mali: via Amps" <amps@contesting.com>
Date: Tue, 12 Mar 2024 10:41:09 +0000 (UTC)
Dick, Thanks for the empirical test. I like that. 73, Jeff On Tuesday, March 12, 2024 at 02:44:14 AM GMT, Dick NY1E <dick@ny1e.com> wrote: I just tried this on my amp, when auto band changing I send
/archives//html/Amps/2024-03/msg00040.html (9,218 bytes)

17. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Mike Smith VE9AA" <ve9aa@nbnet.nb.ca>
Date: Tue, 12 Mar 2024 13:14:41 -0300
While most modern radios will allow you some adjustment of the T/R relay delay my pair of relatively modern IC-7410's will not and I was smoking T/R relays in my fairly modern amps due to hotswitchin
/archives//html/Amps/2024-03/msg00041.html (8,973 bytes)

18. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Jeff in Mali: via Amps" <amps@contesting.com>
Date: Tue, 12 Mar 2024 16:17:27 +0000 (UTC)
Thanks Mike.  It could be that they just are calling before I've switched to RX myself.  73,  Jeff On Tuesday, March 12, 2024 at 04:15:20 PM GMT, Mike Smith VE9AA <ve9aa@nbnet.nb.ca> wrote: While mos
/archives//html/Amps/2024-03/msg00042.html (9,272 bytes)

19. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: "Paul Christensen" <w9ac@arrl.net>
Date: Tue, 12 Mar 2024 12:52:15 -0400
Although the IC-7300 is probably not at the top of a contester's wish list, it truncates the trailing RF edge in all modes when used with an amplifier. The 7300's RF Delay setting is useful for corre
/archives//html/Amps/2024-03/msg00043.html (9,277 bytes)

20. Re: [Amps] Slow start-up of Amps on CW (score: 1)
Author: MU 4CX250B <4cx250b@miamioh.edu>
Date: Tue, 12 Mar 2024 17:16:41 +0000
Good advice, Paul. Tnx! Jim w8zr Sent from my iPhone _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2024-03/msg00044.html (9,863 bytes)

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