[ICOM] re: IC-275H scan problem

[Ken, WA2LBI]

Warren,

Here is a suggestion that may address the signal generator issue. Do you or a
friend have another 2M rig, even an HT, that can transmit at 145.000? You could
run that rig into a dummy load and use no antenna on your rig. The idea is to
get a weak but copyable signal on your '275H. Of course a transceiver will not
be as accurate as a signal generator but it is worth trying. The accuracy of
your DMM will also play a part in the equation.

The way I look at it, for $125, I would give it a try. Make a note of the
voltage before touching L23 so you will have a reference point. Make your 
adjustment and then see if the scanner works.

Ken, WA2LBI

Quoting flearl at msn.com:

> Hi Gary:
>           You have been very helpful in figuring out what to adjust, my
> problem now is that I don't have a signal generator to tackle the adjustment.
>  I do have a low priced digital vom, can the adjustment be made using that by
> measuring the voltage at W64? I am looking at minimum $125 and a few weeks
> downtime to send the radio away and have it serviced, what are the odds of
> successfully tweaking L23 without having the signal generator?
> 73
> Warren n0wf
>   ----- Original Message -----
>   From: Gary Fiber<mailto:g.fiber at verizon.net>
>   To: ICOM Reflector<mailto:icom at mailman.qth.net>
>   Sent: Friday, January 07, 2005 9:15 PM
>   Subject: Re: [ICOM] re: IC-275H scan problem
>
>
>   Warren,
>
>   I found the adjustment Its called the Center Meter Adjustment. on page 6-10
>   of the 275H service manual. The voltage must be exactly 3 VDC.
>   You set the signal generator to 145.000 MHz exactly and turn the 275H
>   there. Then adjust L23 on the main until you read 3 VDC on W64.
>
>   The problem is the 275H does not know its on center frequency when you are
>   scanning.
>
>   I was able to download the service manual from Mods_dk it about 28
>   megabytes in size y\so you will need a fast connection also it is a zipped
>   PDF file.
>   I am confident doing this adjustment will fix the trouble.
>
>   Gary K8IZ
>
>   Gary Fiber K8IZ
>   GROL PG-19-6691
>   Washington State Resident
>
>
>   ----
>   Your Moderator: Dick Flanagan K7VC,
> icom-owner at mailman.qth.net<mailto:icom-owner at mailman.qth.net>
>   Win a new Icom IC-756 PRO III and help QSL/QTH.net
>   Details at: http://mailman.qth.net/<http://mailman.qth.net/>
> ----
> Your Moderator: Dick Flanagan K7VC, icom-owner at mailman.qth.net
> Win a new Icom IC-756 PRO III and help QSL/QTH.net
> Details at: http://mailman.qth.net/
>