[Boatanchors] HF Receiving Balun

[Al Klase]

Hi Byron,

Go to this page on my site and follow the "BALUNS" link:  
http://www.skywaves.ar88.net/ANTENNA/antsys.htm

Core material is very important.  E.g., TV baluns roll off below 5-10 
MHz.  If you round up some of the BN-43-202 "binocular" cores, my 
designs are good from about 100Khz - 60MHz.  In any event the winding 
topology info should be what you need to know.

Hope this helps,
Al

Byron Tatum wrote:
> Hello-
>     I recall an article by Mr. Glenn Zook about using a TV-type receiving balun with older shortwave receivers (such as HQ-129X) that have around 300 ohms input impedance. The balun would noticably improve reception.
>     I have just finished restoring and re-capping a HQ-129X. I am thinking of aligning it using signal generator fed through the balun. 
>     I would like to build my own as I have a lot of torroid and balun cores for QRP use.
>     Does anyone know of a good construction article showing how to build such a receiving balun?
>                                                     Thanks, 
>                                                             Byron WA5THJ  
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-- 
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/