[Elecraft] K3: New Synth and frequency jump between connectors

[Fred Jensen]

Jon,

Joe's response is correct, his almost always are ... if maybe a little 
cryptic.  You need the KXV3 or KXV3A transverter interface and the 
KXBPF3 general coverage band pass filter.  KXV3(A) provides an 8 MHz IF 
output for things like a P3, and a separate receiver input.  You 
activate that with a tap on the RX ANT front panel button.  I don't know 
at which frequency the receive path is switched as you ask, but it is 
definitely above 500 KHz.

My K3, with new synthesizer, receives fine a bit below 160 meters using 
the ANT 1/ANT 2 connectors.  It does NOT below 530 KHz, I have to use 
the RX ANT on the KXV3.

I don't know between those frequencies, here in the New World, they are 
filled with bloviators of all kinds, and I ignore them.  You'll need to 
look up "bloviator", I'm sure there's one or more equivalents in 
Spanish, possibly many. :-)

This new range on the K3 is really cool!

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
- www.cqp.org

On 4/29/2015 7:50 PM, Joe Subich, W4TV wrote:
>
> There should be no difference in antenna performance with the new
> synthesizers.  There is a high-pass filter in the T/R switch to protect
> the PIN Diodes - that means frequencies below 1.5 MHz will be better
> using the RX Ant or XVTR jack.
>
> 73,
>     ... Joe, W4TV
>
> On 2015-04-29 3:34 PM, Jon Iza wrote:
>> Folks,
>> after installing the new synth the Medium Wave stations which were
>> coming thru the antenna BNC are gone, and the Rx In BNC should be
>> used instead.
>> Is there a setting to decide the frequency edge where the signal path is
>> changed? Where can I find information on this setup? The synth manual and
>> the
>> FAQs do not help much.
>> Any hints appreciated.
>> jon, ea2sn