[Elecraft] Front end RF overload

[David Hachadorian]

Dale Farnsworth (call sign unknown) posted on Monday that the Mouser 
part number for the more robust version is 771-BAP64-04-T/R .  Maybe you 
missed it.  Mouser has over 4000 in stock at a price of $0.38, or 10 for 
$3.10.

Glad you found the problem.  It's a relatively easy fix.

Dave Hachadorian
Big Bear Lake, CA


On 7/20/2021 9:51 PM, Connie Marshall wrote:
>
> 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

-- 
Dave Hachadorian, K6LL
Yuma, AZ