Re: [Elecraft] MFJ-259B alignment information?

[rwmcgwier]

www.w8ji.com/mfj-259b_calibration.htm


> W8JI designed the unit and has written a very detailed alignment procedure 
> that 
> is on his 
> website. A search on W8JI and MFJ259B will turn up a link. 
> 
> As coincidence would have it, I found a 259B at a hamfest over the weekend 
> and 
> plan to 
> use his instructions myself. They look good, but I haven't done it yet. Gotta 
> scare up 
> some resistors to use as calibration references. Just ordered some from DX 
> Engineering. 
> 
> 
> Jim K9YC
> 
> On Thu, 15 Jul 2004 21:34:43 -0400, Don Wilhelm wrote:
> 
> >Does anyone know where I can find detailed alignment instructions for a
> >MFJ-259B?
> 
> 
> 
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[Elecraft] BE CAREFUL

[rwmcgwier]

Be careful around T2, Z1, Z2, etc.  I blew the finals by dropping 12V on the 
base of the power transistors.  They were gone in a flash even though the bench 
power supply current limited to 600 ma.
DRAT!
Bob N4HY
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Re: [Elecraft] k2 audio power

[rwmcgwier]

Ed:

I used two K2's at W3CCX over the weekend.  I found one of them to be
usable under the multimulti conditions.  That was not mine, but one built
by John Sortor, KB3XG.  He had mounted an auxiliary audio amplifier
in the lid and it made a world of difference.

We did over a million points for the first time in Packrats history.  I will be
adding external amplifiers to the ones I will be using for FD (2 transmitter,
K2 QRP with AB2KT, W2GD, N2NT, N2NC, W2RQ, and other FRC'ers that
show up) because it is simply a requirement for this kind of noisy environment.

Bob
N4HY


> Ed and all,
> 
> Audio - I do use an external audio amplifier with the K2.
> 
> CW PTT input - I am in the final stages of testing a mod to provide PTT in
> CW mode.  It involves removing RF Board R1 and R2 and inserting a logic AND
> at that point.
> 
> The only inconvience (which is not likely to be resolved soon) is that the
> same PTT input input used for CW will not function on SSB without manually
> changing an added switch.  The normal mic jack PTT still work as it does
> now, and SSB VOX is not changed.
> 
> If you would like to experiment with me, send me a note and I will scan the
> sheet with the schematic and instructions and send it to you.  It will find
> its way to my website in due time.
> 
> 73,
> Don W3FPR
> 
> Life is what happens when you are making other plans
> - Original Message - 
> 
> >
> > I will at least add an external audio amp, but an internal mod would be
> good because I think it would be usefull even at home.
> >
> > There were other complaints too, but minor in nature.  Manual PTT for cw
> being one of the other problems.  With all of the external sequencing
> required for transverters and preamps and power amps, it would really be
> nice if the k2 would switch to tx when I pounce on the footswitch in cw.
> >
> > Other than that we pulled out the weak ones!  Also, the agc off function
> was used well to make a couple of meteor contacts on 222.  Lots of nice
> pings overnight.
> >
> > Ed wa3drc
> >
> 
> 
> 
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