[Elecraft] VGA Cables

[Rick Tavan]

Another advantage of the AUX-ACC connection for some ops is the ability to change bands using the KPA500 band buttons. I don't need them myself, but some ops complained about the lack of band buttons on the small K3 panel. They aren't likely to buy a KPA for its band buttons, but if they want the amp they should finally be happy about having band buttons.

Rick N6XI

On Aug 10, 2011, at 7:41 AM, "Dick Dievendorff" <dieven at comcast.net> wrote:

> There is at least one advantage to using the accessory cable between K3 and
> KPA500.  The K3 can sense when the amplifier is enabled, and adjust its
> output power to preset levels accordingly.
> I can set the K3 to transmit with 100 watts when the amplifier is in
> standby, and the 30 watts when the amplifier is in "operate", without
> constantly changing the K3 power.
> 
> I had a few "oops" moments with earlier transceiver/amplifier combinations
> when I forgot to adjust the exciter output. I don't use an amplifier all the
> time.
> 
> Dick, K6KR
> 
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Richard Squire -
> HB9ANM
> Sent: Wednesday, August 10, 2011 7:33 AM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] VGA Cables
> 
> It is clearly stated in the manual (as mentioned several times on the
> Reflector) that commercial VGA cables are NOT suitable for use with the
> KPA500 as some wires are grounded and/or connected together.
> The KPA500 will work with ANY radio providing PTT to ground. No cable
> required, except PTT!
> 
> I do have the special cable between the K3 and the KPA500 but I also tried
> removing it and connecting the PTT cable only. Since the frequency sensor in
> the KPA500 supersedes any other band switching means (RTM!), there is no
> need, really, for a special cable when using non-Elecraft rigs. And the
> sensor does work, instantly and with only a fraction of a watt drive - even
> with the KPA500 in standby!
> 
> I've just ordered another KPA500 for a friend (an Icom user), that's why I
> tried this out.
> So if you have anything else than a K3, don't worry, go PTT. The sensor will
> take care of the band switching just in case you forget.
> 
> 73 and have fun with the KPA500
> Richard
> 
> -----
> Richard - HB9ANM
> --
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> 7p6672612.html
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