[Elecraft] KPA1500 ATU Memories

Dave rocketnj at gmail.com
Mon Sep 9 13:19:11 EDT 2019


As Dick pointed out, use the utility program to set which bands to use the tuner and which to bypass. I only use the tuner on 80 and after going up the band and letting the tuner find a solution every 20 kHz it works great. 

Dave wo2x

Sent from my waxed string and tin cans. 

> On Sep 9, 2019, at 1:01 PM, Dick Dievendorff <dick at elecraft.com> wrote:
> 
> See "ATU Mode switch" in the KPA1500 Utility "Edit Configuration" dialog and
> in KPA1500 Utility Help for the Edit Configuration tab.
> 
> 73 de Dick, K6KR
> 
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On
> Behalf Of Ray Spreadbury via Elecraft
> Sent: Monday, September 9, 2019 09:23
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] KPA1500 ATU Memories
> 
> In my station  I have a SteppIR yagi for 20M - 6M, a rotatable Optibeam
> dipole for 30M & 40M and a wire dipole for 80m &160M. The SteppIR & Optibeam
> are both resonant antennas & I use the KPA1500 in ATU Bypass. 
> 
> However I need the  ATU for the 80M wire dipole when moving from the CW end
> to the SSB end of the band or for using the dipole on 160M. 
> 
> A single output coax runs from the amplifier to an auto antenna switch
> (using BCD codes) at the base of the mast.
> 
> The KPA1500 does not seem to remember which bands the ATU is in Bypass mode
> & which bands are in ATU Tune mode. 
> 
> If I forget to change the ATU setting in the heat of a Contest, the amp
> switches into Standby with the Hard fault condition.
> 
> Can the KPA1500 ATU be made to remember whether the ATU is in Bypass or In
> by band or have I just got to be more careful?
> 
> 73 Ray G3XLG
> 
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