[RFI] Thumper & not the rabbit

[qrv at kd4e.com]

Sounds as though you have two challenges:

1. How is the RFI getting into the system (and how to stop it)?

2. What, precisely, is causing the "thumping" (the collateral
	consequence of the RFI)?

#1 - Shielding/twisting the control lines, filtering at various
	points, elminating feed-system leakage (including proper
	electrical system & radio system grounding) addressed?

#2 - Someone suggested a damper motor/valve - have you eliminated
	that yet?

Trying to convert this to a checklist to help think it through ..

David KD4E

> A couple of reasons, Main one is the 97 year old who lives here and
> gets scared and very vocal it will cause damage to the heating unit
> requiring replacement of the part and the loss of heat until the
> expensive repair is done. This is not an unjustified concern &
> demand.
>
> The other is I couldn't feel which part is thumping but more to my
> interest, why is it thumping, it's not a hum, its a loud thump. Some
> electronic component is creating slamming in a way it never does in
> normal operation.
>
> I need to find the problem and address that.
>
> Gary
> KA1J



-- 

David (NOT Dave) Colburn, KD4E - Nevils, Georgia USA

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