[WriteLog] K3 and KPA500

[Steve AI9T]

Gary

What interface are you using for the radio switching control? Not using 
any SO2R controller, using separate sound cards and MMTTY plugins.

Do you use band pass filters? NO,, only stub filters that I connect by 
hand only. I was running 15 and S & P on 20 or vice versa only during 
Volta Contest. I see or hear O RF energy in the either radio receiver.

I'm assuming your S&P radio is on a different band than the K3. Yes,, PRO II

What about antenna separation? Antennas are 50' apart on different 
towers,, 3 element Steppir and Mosley TA33

I get the Fault error only after I have stopped transmitting on the PRO 
II and enter the qso in log and switch focus to radio a,, Then fault 
occurs when I push Fkey and start to transmitting on K3/KPA500. I can 
run all day on K3/KPA500 and never get the fault.

but if the fault message is "PWRIN HI" it seems to me that too much RF,, 
Yes I agree but why would this happen only after a log entry on radio b. 
Like there is something not closing all the way in the switching process,

Thanks
73
Steve AI9T


On 5/12/2013 12:03 AM, Gary AL9A wrote:
> I don't run SO2R (yet :) ), but I have some questions about your 
> setup. What interface are you using for the radio switching control?  
> Do you use band pass filters?  How are they switched into the correct 
> configuration for the bands you are working?  I'm assuming your S&P 
> radio is on a different band than the K3, but if the fault message is 
> "PWRIN HI" it seems to me that too much RF may be getting through the 
> band pass filters and into the receive circuits on the K3 and/or the 
> KPA500.  What about antenna separation?  Does the fault occur with a 
> particular combination of send/receive antennas or it doesn't seem to 
> matter?
>
> 73,
> Gary AL9A
>
> ----- Original Message ----- From: "Steve AI9T" <steve at ai9t.com>
> To: "'WriteLog Reflector'" <writelog at contesting.com>
> Sent: May 11, 2013 1:49 PM
> Subject: [WriteLog] K3 and KPA500
>
>
>> I'm having a problem running SO2R RTTY with my K3 & KPA500 with 
>> Writelog. I am either getting an error on the K3 Screen or my KPA500 
>> will fault. If I run one radio there are no problems. Everything is 
>> fine.
>>
>> This happens when:
>>
>> I call CQ with the K3 (radio a), switch focus (radio b)to S & P and 
>> call a station calling CQ, while he is answering me I calling CQ on 
>> the K3 (radio a), I answer him back on S & P (radios b) give him his 
>> report and enter qso in log, Now when I call CQ again on the K3 
>> (radio s) I either get the fault on the KPA500 or error on K3. This 
>> will happen almost everytime I do this. The fault is "PWRIN HI"
>>
>> Kind of hard to explain.
>>
>> running Writelog version 11.11c The K3 is controlled by a MKII the S 
>> & P rig uses a simple transistor interface.
>>
>>
>>
>>
>> -- 
>> 73
>>
>> Steve AI9T
>>
>> http://www.ai9t.com
>>
>> AI9T DX Cluster
>>
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>>
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>
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-- 
73

Steve AI9T

http://www.ai9t.com

AI9T DX Cluster

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