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G0FTD > CURE 04.05.03 19:44l 37 Lines 1262 Bytes #999 (0) @ WW
BID : AA1267G0FTD
Read: DB0FHN GUEST
Subj: Re: RF noise cure trick !
Path: DB0FHN<DB0ZWI<DB0HDF<DB0HOT<OK0PKL<OK0PPL<RZ6HXA<SP7MGD<GB7SXE
Sent: 030427/2216Z @:GB7SXE.#38.GBR.EU #:17918 [Hastings] FBB7.00i $:AA1267G0FT
From: G0FTD@GB7SXE.#38.GBR.EU
To : CURE@WW
G0ANS wrote:-
>> Now the problem is that if I connect a cable from the speaker socket of
>> my IC706 to the input of the Hamcom interface all I end up doing is
>> directly injecting noise from the PC into it.
>
> I personally use a connection to the DATA socket. Mini din.
> No PC noise so far.
Maybe so. But here I suffer badly. No doubt you are using a desktop
which usually contains a linear psu.
I use laptops here, and they usually come with a small switched mode psu
which generates oodles of rf trash.
If I run the laptop on it's battery then all is fine, thus proving it's
the smpsu.
No doubt this is to allow a much smaller physical size than a linear
psu and transformer. Not usually a problem for "normal" users but for
radio people it's not so good.
ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿
³ 73 - Andy ³
³ G0FTD ³
³ Psion Revo owner ³
³Msg sent 72-40-3002³
³ ÚÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³
³ ³ Û ³ ³
ÀÄÄÁÄÄÄÄÄÄÄÄÄÄÄÄÄÁÄÄÄÙ
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