[ICOM] ICOM-R7000

[Edward A. Feustel]

On 6/15/2013 11:05 PM, Floyd Petri wrote:
> I have an icom R7000 Receiver that started out with bad sensitivity and now
> it does not hardly receive on any frequency except on local good time radio
> stations just fine. I can dial up my local volunteer fire department VHF
> frequency of 155.865 and receive nothing although a walkie talkie setting
> beside it receives OK. Now I can put a signal generator on 155.865 and put a
> piece of wire on the output and crank the signal up to 100K microvolts and
> receive that just fine.
>
>   
>
> Does anyone have any suggestions on what may be wrong and how to fix it?
>
>   
>
> Floyd
>
>
Floyd,
Have you checked the front end to see if any protecting diodes have not been
"taken out"? If they are OK, have you checked the first RF amplifier? If 
either of these
have been damaged, this could result in your lack of sensitivity.

If they turn out to be the problem and they are surface mounted, you may 
want to send the unit to ICOM. If not, try to find equivalent parts and 
substitute them.

Ed, N5EI