Colin,
I read the description of the mfj-209 on their website.  They mentioned 
attaching a frequency counter to an RCA plug to get a more accurate 
frequency measurement.  
However, I'm still not sure how useful the 209 would be for a blind 
person.  I'm guessing you need to look at the meter to find antenna 
resonance (possibly looking for lowest swr).  
It will be interesting to see what the qst article has to say, but I 
wouldn't be at all surprised that you'd need to modify the 209 itself to 
give some audible indication of lowest swr.

73 Chris w1gm
On Wed, Dec 20, 2006 at 06:46:40AM -0700, Colin McDonald wrote:
> Hi list:
> someone sent in the info about the cw readout frequency counter the other
> day, and in seeking more information, I found out that the Mcount, which is
> the small device that reads the frequency and outputs the code, can be
> interfaced with the MFJ 209 antenna analyzer.
> Apparently the febuary 2007 addition of qst will have an article on how to
> built this interface and get the Mcount to read out the resonant frequency
> while you are testing antennas.
> So, finally, using an analyzer to build and tune antennas might be in our
> reach without having sighted assistance all the time.
> 73
> Colin, CF6BKX