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ZS6RO > HARDWA 06.01.03 19:59l 30 Lines 1135 Bytes #999 (0) @ WW
BID : 21359_ZS1RO
Read: DK5RAS DB0FHN GUEST
Subj: Re: Finding IC28 Deviation Control
Path: DB0FHN<DB0RGB<OK0PPL<RZ6HXA<SP7MGD<ON0BEL<CT4DK<CT2GNH<JN3AOU<JM1YSB<
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Sent: 030104/1138Z @:ZS6RO.SRJ.GAU.ZAF.AF #:21359 [Johannesburg] InterGate
RO
** NEWSGROUP: rec.radio.amateur.equipment
** FROM : k9opo@comteck.qlfit.com (Roger Grady)
>On 31 Dec 2002 12:01:21 -0800, robmm76@hotmail.com (Rob) wrote:
>
>>I am trying to locate and identify the deviation control in the IC28
>>in order to connect a pl tone board. Does anyone have a service
>>manual or know how to locate the pot? On the IC25 it is R36. Any
>>help would be greatly appreciated. de AL7AW.
The pot you're looking for is R100, on the "main" board. That's the
one under the top cover. If you look down on the board with the front
panel toward you, R100 is about in the middle of the right half of the
board. Slightly farther toward the rear and at the right edge of the
board is R89, which is labeled as "70% deviation adjustment". My copy
of the service manual doesn't really mention adjusting this control,
but I think it's sort of a "mic gain", while R100 sets the maximum
deviation.
If you need more information email me (noting the anti-spam address).
Roger Grady k9opo@comteck.qlfit.com
To reply by email, remove "qlfit." from address
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