[Top] [All Lists]

Re: [TenTec] Omni V power limits

To: tentec@contesting.com
Subject: Re: [TenTec] Omni V power limits
From: "Dr. Gerald N. Johnson" <geraldj@weather.net>
Reply-to: geraldj@weather.net, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 01 Jul 2010 22:50:47 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Very good point.

73, Jerry, K0CQ

On 7/1/2010 3:50 PM, CSM(r) Gary Huber wrote:
> Even if you have a clean, low distortion signal, while using an amplifier,
> you need to keep the output to 50W or so to avoid causing AGC compression in
> the receivers of the other stations  in the PSK-31 sub-band. Don't forget
> that in PSK-31, many stations are simultaneously using a single 2500 Hz SSB
> bandwidth with a recommended output of 30W.  When there are QRO signals in
> the waterfall, the receiver AGC typically causes the weaker signals to be
> less likely to be decoded as their audio will be reduced..... its fairly
> easy to figure out which signal in the waterfall is causing the other
> signals to be compressed but its difficult to politely convey to the
> perpetrator the damage being caused. Few DX-peditions want to offer PSK-31
> contacts for the very reason that many operators will not abide by the
> self-imposed low power necessary to share a PSK-31 sub-band.
TenTec mailing list

<Prev in Thread] Current Thread [Next in Thread>