[600MRG] Modifying a MFJ259C

[Kenneth G. Gordon]

On 1 Jun 2015 at 16:04, Dick Bingham wrote:

> Hello folks
> 
> I have been tempted to buy one of the MFJ259C Impedance Analyzers and have
> heard some folks have a 'mod' to get it to work at 630-meters.
> 
> Is this true that there IS a modification to extend the low-frequency range a
> bit. If so, I'll buy one and get busy working on some antennas . . .

Yes. "Our own" John Langridge and Ed Cole have published an article on 
modifying the MFJ-259B to cover MF.

Here is a link to it:

http://njdtechnologies.net/modifying-an-mfj-259b-antenna-analyzer-to-operat
e-on-630-meters/

The latest version of the MFJ antenna analyzer, for an additional $100, 
covers VLF too, down to, as I remember it, 135 KHz.

Ken W7EKB