Re: [Elecraft] Looking for Auto-Balanced Tuner
A little pricey but exactly what your looking for. http://www.hamware.de/ Rich - N5ZC [EMAIL PROTECTED] wrote: I thought of feeding the coax inputs of two small tuners (like the MFJ16010) from the output of a 1:1 balun (like the BL1). Use banana plugs to connect the balun output to the center pin of the input coax connector. Connect the tuner grounds together and - presto - a balanced tuner! This may work with two auto tuners also - assuming that each tuner is set to the same L/C settings to maintain balance. I am still wishing for a truly balanced auto tuner with one set of capacitors and two sets of inductors. 72, John W2XS ___ 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] Looking for Auto-Balanced Tuner
I built my own. You can see a 'brassboard' of it on my web page http://www.qsl.net/k7fj/ The tuner now uses a BasicX PIC which has far more memory available than the Basic Stamp PIC. The tuner works great at 500 watts when driving my 600 foot horizontal loop through ladderline. I plan to order a K2 case next week and will be building the tuner into the new case this winter. There have been changes in software. I no longer use it as an autotuner because I ran out of memory for that function but it could still be implemented with a little programming effort. I found that autotuning is just not necessary. The tuner is designed for manual tuning using inductance and capacitance up and down buttons and, once a good match is achieved manually, L and C are stored in memory for that particular frequency. This can be done for either of two antennas (selectable from a menu). The C is connected either to the output (antenna) or input sides of the inductors by a menu sellection and this is remembered (and retrieved automatically) for each frequency and each antenna. The tuner is connected to the com port of the K2 and its settings (L, C, and input/output C connection) are automatically changed whenever the frequency of the K2 is changed. It is a completely 'hands off' tuner. Don K7FJ I am still wishing for a truly balanced auto tuner with one set of capacitors and two sets of inductors. 72, John W2XS ___ 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] Looking for Auto-Balanced Tuner
On Friday 08 December 2006 13:32, [EMAIL PROTECTED] wrote: I am still wishing for a truly balanced auto tuner with one set of capacitors and two sets of inductors. I have an SG-231: its manual states that it can be used in a loop, one end to the 'hot' terminal and the other to the 'ground' terminal. Would there be a significant difference using a balanced tuner? Ian, G4ICV, AB2GR, K2 #4962 -- ___ 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] Looking for Auto-Balanced Tuner
I have an SG-231: its manual states that it can be used in a loop, one end to the 'hot' terminal and the other to the 'ground' terminal. Would there be a significant difference using a balanced tuner? Ian, I also have the 231 and it is an unbalanced tuner. I tried it with the Cobra Extra light Jr. on 80 meters and had RF all over the place. I bought the MFJ manual balanced tuner, and problem solved. The 231 is actually designed for long-wires or verticals. It will work on loops and all, but with mixed results. Now, the 231 is in my trunk with a very short lead to a 102 whip and it works very very well. I think Palstar has some type of auto balanced tuner. Tom W6EIJ ___ 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
