[Elecraft] [K3] MFJ-1786 Antenna

Fred Jensen k6dgw at foothill.net
Sat Sep 6 22:27:16 EDT 2014


No experience with the MFJ but I do have an AlexLoop and it's pretty 
versatile, sets up fast, is fairly immune to things around ... and 
ground or the lack of it.  It's definitely QRP, I'm not sure I'd want to 
fool around with a mag loop at 100W.  Narrow band [really] on 40 and 30 
but tunes easily, I use mine mainly activating SOTA summits.

One thing you need to know if you don't already, most are resonant 
transformers and *MUST* be exactly at resonance.  Getting it close, like 
3:1, and letting the ATU do it's thing is a recipe for a dummy load. 
Bypass the ATU.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

On 9/6/2014 6:50 PM, David Guernsey via Elecraft wrote:
> Does anyone have any experience using a MFJ-1786 with a K3? I live in
> a 2nd floor condo in a 5 story brick building. Considering a magnetic
> loop on my balcony to get back up on HF.



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