[Elecraft] Front end RF overload

[Connie Marshall]

Dave... thanks so much. The sensitivity returned when I did the J66 
jumper test. So looks like PIN diode D5 needs to be replaced. Looks like 
I can order from Mouser. Will do some digging and see if I can find the 
"more robust version".

73, Connie / K5CM

On 7/19/2021 12:08 AM, David Hachadorian wrote:
> Try this:
> https://marc.info/?l=elecraft&m=145323127930319&w=2
>
> Unfortunately, the link near the bottom for the more robust 
> replacement part doesn't work anymore, but maybe someone can come up 
> with the part number.  I've got a bunch of them at home, but I'm on 
> vacation.  The robust replacement is slightly larger in size, but it 
> will still fit on the solder pads if you are careful.
>
> Dave Hachadorian, K6LL
> Big Bear Lake, CA
>
>
>
> On 7/18/2021 9:34 PM, Connie Marshall wrote:
>> While operating SO2R the 'HIGH RF" warning flashed on the K3 display. 
>> Before I could react and stop the transmission on the other radio the 
>> front end got zapped. The radio is down about 50 db on RX. I checked 
>> Ant 2 and RX antenna and the same problem so probably not the surge 
>> protectors on each of these inputs. Any ideas on what part goes out 
>> when this happens. The TX radio was on 20 meters and the RX radio was 
>> on 15 meters.
>>
>> Connie / K5CM
>>
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>
> -- 
> Dave Hachadorian, K6LL
> Yuma, AZ