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[TenTec] RFI to Ten Tec power supply

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Subject: [TenTec] RFI to Ten Tec power supply
From: kg5u@hal-pc.org (Dale Martin)
Date: Mon, 13 Oct 1997 12:28:35 -0500
On Monday, October 13, 1997 9:48 AM, John/K4WJ[SMTP:bohnovic@worldnet.att.net] 
>At 01:51 PM 10/13/97 +0000, Webster D. Williams wrote:
>>HELP! All my station is grounded (well, I think). I'm getting RFI into
>>my Ten Tec power supply. People are commenting that my signal doesn't
>>sound right, and when I mention that they're probably hearing an echo of
>>my signal through my speaker, they tell me that's what it sounds like. I
>>didn't realize how bad the problem was until I was working on a handie
>>talkie last week, on 440, at 100 milliwatts in the room with the power
>>supply. Every time I keyed up I could hear the speaker clicking! I even
>>moved the power supply into a steel equipment rack two feet from my
>>Corsair II in my shack, and it's now got a grounded layer of steel
>>between it and my HF set. Has anyone else experienced this? What was
>>your fix? I'm thinking about adding bypass caps and ferrite stuff, but
>>don't really want to change Ten Tec's design. Perhaps a part in my power
>>supply went bad? Thanks- Web Williams
>>P.S. I can read schematics, and have good means to measure and check
>>parts, so if you need to refer to checking part number "X" that's OK.
>I have a very similar problem with my Ten Tec 544. Every time my packet
>radio xmits I can hear the relays in my Ten Tec 544 operate. This does not
>happen when the mode switch is in any of the CW positions. It only happens
>when the mode switch is in the SB-N position.

Do you think your packet radio's rf may be triggering the
VOX?  Mine was real sensitive to other RF, too. 

Dale Martin, KG5U

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