[Elecraft] KAT500 follows K3 RX freq

Bob McGraw K4TAX rmcgraw at blomand.net
Wed Aug 21 20:55:54 EDT 2019


Train the tuner at closer frequency intervals on the band and antenna.  I use 25kHz on 160M & 80M across the entire band.  Then 50kHz on all other bands. 

Bob, K4TAX


Sent from my iPhone

> On Aug 21, 2019, at 7:48 PM, Robert Cunnings <nw8l at whitemesa.com> wrote:
> 
> Yes, I don't like the way the KAT500 follows RIT changes. Sometimes I cross a stored band slice boundary, the relays click and I know that if I transmit I'll be using the wrong tuning solution. I reported this as a bug back in 2014 [1] but I doubt it will ever get fixed.
> 
> Bob NW8L
> 
> [1] https://www.mail-archive.com/[email protected]/msg173968.html
> 
>> On Wed, 21 Aug 2019, Andy Durbin wrote:
>> 
>> " All I do is change RX frequency on the K3S and every thing else follows.  No RF required to switch things to the correct configuration for band, frequency and antenna."
>> 
>> I think that having the KAT500 follow the K3 RX frequency is a really poor system design.  The tuner, and the tuner's frequency dependent antenna selection, should follow the transceiver transmit frequency.  Why does it matter? Well one day you will transmit with a large difference between TX and RX frequencies into the wrong antenna and with the wrong tuning solution.  This will fault the KAT500 and/or the KPA500 and could possibly cause damage.
>> 
>> It actually works a lot better if the KAT500 and KPA500 follow the rig TX frequency and are properly configured before the transmission starts.
>> 
>> 73,
>> Andy, k3wyc
>> 
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