|To:||"tower Talk List" <email@example.com>|
|Subject:||Re: [TowerTalk] ARR Preamp Failures|
|From:||W0UN -- John Brosnahan <firstname.lastname@example.org>|
|Date:||Tue, 05 Oct 2004 11:18:48 -0500|
One other thought comes to mind on this topic of preamp failure.
TOWER-mounted (there, I said it) RF-switched preamps are usually designed to work with a continuous carrier like FM. When used with SSB they can "chatter" with the RF amplitude variations--depending on the relay "hang time".
I don't know if K9YC's issues are with SSB operation, but SSB is especially tough to do with RF switched preamps with the constant variation of RF amplitude, causing the detector circuitry to repeatedly drop out.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
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