[Elecraft] K3S Sub Receiver stopped working

[Buck]

No blank slots allowed between filters

Buck, k4ia
Honor Roll
8BDXCC
EasyWayHamBooks.com

On 3/22/2019 11:59 AM, KE8G wrote:
> Hi All,
> I need some suggestions on where to start trouble shooting.  I looked at
> Nabble and I have checked all that is listed there and no luck.
> 
> The sub receiver was working perfectly.  I took the radio apart to add some
> new filters to the sub receiver.  It originally had two of them; configured
> as 2.8Khz, then a 400Hz right next to it, and then 3 blank slots.  I
> removed the 400Hz, the the filters are in the following order; 2.8Khz,
> blank slot, 1.0Hz, 400Hz, and finally 250Hz in the 5th slot.
> 
> I used the K3 utility to configure them, with the appropriate settings for
> each filter.
> 
> When using the radio, I have both the main and sub receiver on the Main
> antenna.  If I tune to a strong signal on the band, using just the main
> receiver, I hear on both sides of the headphones.  When I engage the sub
> receiver, I still hear the signal in the left ear, but the right ear goes
> to just white noise.
> 
> When the sub receiver is engaged, I can hear sounds in the left ear when
> pushing any buttons on the radio.
> 
> I am somewhat stumped, as I was very diligent in disassembly and then
> re-assembling it.  Using most current firmware, 5.66.
> 
> Please advise.
> 73 de Jim - KE8G
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