Re: K3 VFO B Anomaly

Posted by allenrw1955 on
URL: http://elecraft.85.s1.nabble.com/K3-VFO-B-Anomaly-tp3509585p3509862.html

W2LE wrote:
My K3 does the same thing tuning VFO A or B at 4800, probably you can't
have separate bandpass filters on the VFOs so the other frequency has to
change.
Bob
KB1FRW

> I see similar strange things when tuning VFO A around 4.800.  When VFO A
> is below 4.800 B is at 4799.96 - when A goes above 4.800 B goes to 5.285
> MHz.  This is on SN 1114 - 3.25
>
> Glad I don't normally listen there.
>
> Paul  W2LE
>
> Robert Beard wrote:
>  
>> Good Morning List,
>>
>> Just noticed, while tuning VFO A down through 4.800.0 MHz, I can hear a relay switching.
>> I believe this is band pass filter switching on the KBPF3 board.
>>
>> All well and good, except that VFO B jumps to 3.526.76 MHz at the switching point, regardless of any previous setting.
>>
>> When tuning VFO A back up through 4.8 MHz., the relay switches and VFO B jumps to 5.300.00 MHz.
>>
>> Anyone else seeing this curious behavior? (Or am I missing something....?)
>>
>> K3 is s/n 1500 with 3.14/2.16/2.16 installed.
>>
>> Best regards,
>>
>> Rob, N6VX
>> ______________________________________________________________
>>    
>
>  

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