[Elecraft] T1 Remote Tuning and Power Supply

[Michael Babineau]

George :

Don't under-estimate the T1. 

I have used it with a 44 foot doublet fed with twisted pair made from #26 AWG Teflon coated, silver plated wire and it tunes nicely from 40m through 10m. 
The 88 ft version should tune just fine on 80m with some tweaking.  As with pretty much any antenna the impedance will vary somewhat as a function
of height. In my experience if you are going to have tuning issues with an 88ft or 44ft doublet, it will most likely be on the lowest band, where it is a bit short of 
a half wavelength.  Usually this can be rectified by shortening the parallel feedline by a few inches to present a more reasonable impedance to the tuner so be sure 
to leave some extra feedline length as you will likely need to do some pruning once the antenna is installed. 

Best of luck 

Michael VE3WMB / VA2NB 

>From: GeorgeP1111 <pasek001 at umn.edu>
>Date: March 10, 2011 10:33:47 AM EST
>To: elecraft at mailman.qth.net
>Subject: Re: [Elecraft] T1 Remote Tuning and Power Supply


>Hi Bill....

>Quite a while back you sent me this request (I didn't forget).  I'm done with the schematic of the T1 remote tuning interface that I hope to find time to build.  If you are still interested, I can shoot you over a copy >of it.  The Tiny CAD program I use to draw schematics only allows me to export them in .emf format, but using Windows Viewer (double click on the .emf file) will allow it to be viewed and printed.

>Anyhow, I was going to use the T1 to tune a 88' dipole fed with twin lead to be used as a multi-band antenna, but upon further research on this antenna I don't think the T1 has enough to be able to tune it.  I >am still going to build the interface because sooner or later I will probably be moving into a restricted area and need to use some sort of stealthy antenna.

>73's
>de George
>WD0AKZ