Re: [Elecraft] Automatic 1:1/4:1 Balun switching under K3 control?
This idea is right on the money, Wayne. I use simple dipoles with tuned feeders, and have to manually throw the slide switch from one band to the next. This idea would be a real help in automating my contest station. Thanks and 73 Bob N6WG - Original Message - From: wayne burdick [EMAIL PROTECTED] To: Leigh L Klotz, Jr. [EMAIL PROTECTED] Cc: Elecraft Reflector elecraft@mailman.qth.net Sent: Thursday, December 20, 2007 12:00 PM Subject: [Elecraft] Automatic 1:1/4:1 Balun switching under K3 control? Leigh wrote: This is great! I had been meaning to ask because I have use a switchable BL2 ony my big loop and had no way of knowing what the KAT3 was doing in the 1:1 and 4:1 positions, other than how long it took to find a match. This is certainly one excellent use of the KAT3's LCSET mode, Leigh. You've also given me an idea for a BL3: Same as the BL2 but with a relay rather than a switch for selecting 1:1 vs. 4:1. We could then use one of the K3's spare output lines (say DIGOUT1) to switch the relay under firmware control, per-band. There would be one wire running from the AUX I/O connector to the BL3, and you'd need to power the relay from the K3's switched 12 VDC accessory output. If this is of interest, I'll ask the BL2's designer to take a look at it. I have the same problem myself, so I already want two :) 73, Wayne N6KR On Thu, 20 Dec 2007 10:55 am, wayne burdick wrote: If you're ever curious about the actual L and C values used in the matching network, you can check them using a special setting of the KAT3 menu entry (in the CONFIG menu). Just set KAT3 to LCSET, then exit the menu. Next, tap ATU TUNE. This will display the present L and C values. --- http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Automatic 1:1/4:1 Balun switching under K3 control?
Thanks to all for replies. Yes, I might need to make a module anyway, because I had in mind direct use from the K3 and not including a KRC2 73 de M0XDF / FISTS #12575, K3 # 174 Merry Xmas and a Happy New Year On 20/12/07 21:12, [EMAIL PROTECTED] [EMAIL PROTECTED] sent: David, Not to worry...I am sure someone will develop a mod to change the BL2 to a BL3. -- By all means marry. If you get a good wife, you'll be happy. If you get a bad one, you'll become a philosopher. -Socrates ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Automatic 1:1/4:1 Balun switching under K3 control?
Leigh wrote: This is great! I had been meaning to ask because I have use a switchable BL2 ony my big loop and had no way of knowing what the KAT3 was doing in the 1:1 and 4:1 positions, other than how long it took to find a match. This is certainly one excellent use of the KAT3's LCSET mode, Leigh. You've also given me an idea for a BL3: Same as the BL2 but with a relay rather than a switch for selecting 1:1 vs. 4:1. We could then use one of the K3's spare output lines (say DIGOUT1) to switch the relay under firmware control, per-band. There would be one wire running from the AUX I/O connector to the BL3, and you'd need to power the relay from the K3's switched 12 VDC accessory output. If this is of interest, I'll ask the BL2's designer to take a look at it. I have the same problem myself, so I already want two :) 73, Wayne N6KR On Thu, 20 Dec 2007 10:55 am, wayne burdick wrote: If you're ever curious about the actual L and C values used in the matching network, you can check them using a special setting of the KAT3 menu entry (in the CONFIG menu). Just set KAT3 to LCSET, then exit the menu. Next, tap ATU TUNE. This will display the present L and C values. --- http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Automatic 1:1/4:1 Balun switching under K3 control?
I just bought a BL2 with my K3 - why wasn't there a BL3 then! HiHi I'd be interested, especially if the KAT3 worked the relay when tuning too On 20/12/07 20:00, wayne burdick [EMAIL PROTECTED] sent You've also given me an idea for a BL3: Same as the BL2 but with a relay rather than a switch for selecting 1:1 vs. 4:1. We could then use one of the K3's spare output lines (say DIGOUT1) to switch the relay under firmware control, per-band. There would be one wire running from the AUX I/O connector to the BL3, and you'd need to power the relay from the K3's switched 12 VDC accessory output. If this is of interest, I'll ask the BL2's designer to take a look at it. I have the same problem myself, so I already want two :) -- Dont complain. Nobody will understand. Or care. And certainly dont try to fix the situation yourself. Its dangerous. Leave it to a highly untrained, unqualified, expendable professional. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Automatic 1:1/4:1 Balun switching under K3 control?
It could be that the relay could be switched by sending DC voltage up the coax, particularly if the balun is a good distance from the radio - much like turning on a pre-amp on the mast. 73, Jamie WB4YDL wayne burdick wrote: Leigh wrote: This is great! I had been meaning to ask because I have use a switchable BL2 ony my big loop and had no way of knowing what the KAT3 was doing in the 1:1 and 4:1 positions, other than how long it took to find a match. This is certainly one excellent use of the KAT3's LCSET mode, Leigh. You've also given me an idea for a BL3: Same as the BL2 but with a relay rather than a switch for selecting 1:1 vs. 4:1. We could then use one of the K3's spare output lines (say DIGOUT1) to switch the relay under firmware control, per-band. There would be one wire running from the AUX I/O connector to the BL3, and you'd need to power the relay from the K3's switched 12 VDC accessory output. If this is of interest, I'll ask the BL2's designer to take a look at it. I have the same problem myself, so I already want two :) 73, Wayne N6KR On Thu, 20 Dec 2007 10:55 am, wayne burdick wrote: If you're ever curious about the actual L and C values used in the matching network, you can check them using a special setting of the KAT3 menu entry (in the CONFIG menu). Just set KAT3 to LCSET, then exit the menu. Next, tap ATU TUNE. This will display the present L and C values. --- http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Automatic 1:1/4:1 Balun switching under K3 control?
On Thu, 20 Dec 2007, wayne burdick wrote: You've also given me an idea for a BL3: Same as the BL2 but with a relay rather than a switch for selecting 1:1 vs. 4:1. And for those that bought the BL2...a handy-dandy retrofit kit. If this is of interest, I'll ask the BL2's designer to take a look at it. I have the same problem myself, so I already want two :) Knowing that I never have the right stuff, I know as soon as you make it available, I will find out that I've needed it all along. Thom,EIEIO Email, Internet, Electronic Information Officer www.baltimorehon.com/Home of the Baltimore Lexicon www.tlchost.net/hosting/ Web Hosting as low as 3.49/month ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Automatic 1:1/4:1 Balun switching under K3 control?
David, Not to worry...I am sure someone will develop a mod to change the BL2 to a BL3. 73, Henry - K4TMC -Original Message- From: David Ferrington, M0XDF [EMAIL PROTECTED] To: wayne burdick [EMAIL PROTECTED] Cc: Elecraft Reflector elecraft@mailman.qth.net Sent: Thu, 20 Dec 2007 3:21 pm Subject: Re: [Elecraft] Automatic 1:1/4:1 Balun switching under K3 control? I just bought a BL2 with my K3 - why wasn't there a BL3 then! HiHi I'd be interested, especially if the KAT3 worked the relay when tuning too On 20/12/07 20:00, wayne burdick [EMAIL PROTECTED] sent You've also given me an idea for a BL3: Same as the BL2 but with a relay rather than a switch for selecting 1:1 vs. 4:1. We could then use one of the K3's spare output lines (say DIGOUT1) to switch the relay under firmware control, per-band. There would be one wire running from the AUX I/O connector to the BL3, and you'd need to power the relay from the K3's switched 12 VDC accessory output. If this is of interest, I'll ask the BL2's designer to take a look at it. I have the same problem myself, so I already want two :) -- DonŒt complain. Nobody will understand. Or care. And certainly donŒt try to fix the situation yourself. ItŒs dangerous. Leave it to a highly untrained, unqualified, expendable professional. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com More new features than ever. Check out the new AOL Mail ! - http://webmail.aol.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
