We weren't using high power at Visalia. There are different opinions about whether 500 W is too much for a BNC connector, but the point is moot; the connectors on the KAT500 are all SO-239 UHF connectors.
Power needs haven't been specified, but we have a number of 12V relays that want 30 mA and one that needs 60 mA. I'm hoping we can keep the overall power limit to 2A max, but 1A may not be attainable. There will be a pull-to-ground to initiate tune mechanism on the AH-4 connector. However we really need to interrupt the amplifier key line during tuning, or you'll have to do it yourself to tune. Some of the ATU's ability to protect itself from damage in the event of severe mismatch and high power depends on the ability to inhibit the amplifier through the amp PTT/key line. The ATU is bypassed and ANT1 is selected when powered off. Right now I depend on a power off pushbutton to save some transient state, but I think I want to do it periodically anyway (saving only if it's changed) so that if you make a change and wait a few seconds we won't lose that state across power off. New tune results are of course saved for retune. We have a lot of EEPROM for saving tune results. Dick, K6KR -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of ab2tc Sent: Tuesday, April 24, 2012 2:45 PM To: [email protected] Subject: Re: [Elecraft] New KAT500 pics from the Visalia DX convention Hi, Yes, but the cables are BNC terminated cables connected via adapters from the looks of it it. Not in my shack either, but that is beside the point. More questions: How much current on the 11-15V supply? Is the "tune" button a simple switch to ground? You know what I am getting at. I want to mount this fellow outdoors in a weather protected shelter and remote it. I have been doing that successfully with an MFJ auto-tuner for more than 3 upstate NY winters and it's still going strong. I think my "house" can accommodate the KAT500 with some rearranging. Assuming that the tuner will switch to bypass when losing power, all I need is the ability to initiate a tune cycle. I assume that the tuner can be put in semiautomatic mode (only tunes on demand) and will remember the mode across power cycle. I am drooling already. The MFJ tuner performs adequately but has a 200W limit and is somewhat temperamental when it comes to finding a tuning solution. An Eham reviewer of it claims that they have wired the 4 LSB bits for the relays backwards. I find it hard to believe but it often fails to find solutions on easy to tune antennas (I have 6 behind an MFJ remote switch box). AB2TC - Knut Gary Gregory wrote > > Rick, > > Maybe you need another coffee?...:-) > > Look pretty much like SO-239's to me.... > > Gary > > On 25 April 2012 06:18, Rick Bates <happymoosephoto@> wrote: > >> Did I see BNC adapters? For THAT much energy? Not in my shack... >> ;-) >> >> It's time to replace the drool pads again... patience patience >> >> Rick wa6nhc >> >> On 4/24/2012 12:50 PM, Eric Swartz - WA6HHQ, Elecraft wrote: >> > New KAT500 pictures on our news page: >> > http://www.elecraft.com/news.htm >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net Please help support this >> email list: http://www.qsl.net/donate.html >> > > > > -- > Gary > VK4FD - Motorhome Mobile > Elecraft Equipment > K3 #679, KPA-500 #018 > Living the dream!!! > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html > -- View this message in context: http://elecraft.365791.n2.nabble.com/New-KAT500-pics-from-the-Visalia-DX-con vention-tp7497067p7497526.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
