13) Are there any other sources of RF in the area? (Like
commercial FM broadcast, LPTV etc)
14) Is your equipment in a position where it might be
seeing your own RF/transmitted signal?
(Follow up to Stu's question #7)
15) Did you use a dummy load when testing at home?
(Stu is on this trail with with his questions #10,
#11 and #7)
Jim P // WB5WPA //
----- Original Message -----
From: "Stu Benner" <firstname.lastname@example.org>
To: <email@example.com>; <firstname.lastname@example.org>
Sent: Tuesday, May 09, 2006 6:34 AM
Subject: Re: [RFI] Fan Noise on Repeater
> A few questions for you to help better understand the problem:
> 1) On what band does the repeater operate?
> 2) What make and model are the repeater radios?
> 3) What is the operating voltage of the fan?
> 4) How is the fan controlled (e.g., thermostat, continuous, proportional,
> 5) From where does the fan obtain its operating voltage?
> 6) Where on the repeater is the fan mounted and how?
> 7) Is there noise from the fan on the repeater receiver (with a weak
> applied) when the repeater transmitter is off?
> 8) Explain how the repeater was connected to operate from 120 VAC at one
> location and battery at another.
> 9) What is the make and model of the fan?
> 10) Describe the antenna height and distance from the fan for both sites
> 11) Describe any other differences in setup between the two sites such as
> transmission lines, etc.
> 12) For what purpose is the fan used?
> Stu Benner
> -----Original Message-----
> From: email@example.com [mailto:firstname.lastname@example.org] On
> Behalf Of email@example.com
> Sent: Tuesday, May 09, 2006 12:00 AM
> To: firstname.lastname@example.org
> Subject: [RFI] Fan Noise on Repeater
> I have a repeater that picks up noise from the fan. When I was
> testing the repeater here at home, it was on 120 v ac power - no
> noise. Now that it is on the hill top it is on battery power - no ac
> power. When the fan turns on, you can hear noise and if you have a
> weak signal into the repeater, the noise will cover you up. I will be
> going to the site this Sat to fix the problem ... I hope. Your ideas on
> how to stop the noise? (having no fan is not an option) Thank you.
> Rod KC7VQR
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