Topband: Two wire beverage question

[Andrey Fedorishchev]

Feel free to check http://www.ra6lbs.ru/Papers/Bv_RA6LBS.ppt p. 10 and 13
to see the diagram, which is by the way a bit different of the  DXE box.
And there is no electrolitics of cource, the only similar part on my PCB is
inductance in reality.

2012/3/23 Kenneth Grimm <grimm at sbc.edu>

> I'm in the process of building a new two wire beverage control box to
> replace the one that Thor destroyed the other day.  Fortunately the coax
> lead in was disconnected at the time!  The top of the box has not been
> recovered and much of the contents vaporized.  The inside of the box has
> lots of scorch marks...and not much else.  The reflection transformer, some
> 580 feet away, appears to be unaffected as does the 450 ohm twin lead.
>
> I plan to do a PC board for the new control box and so I had a look at how
> the DX Engineering box was laid out.  I also had a look at the board made
> by RA6LBS.  Both of these boards appear to have an electrolytic capacitor
> installed.  On both boards the electrolytic appears to be associated with
> the direction switching relay.  None of the two wire beverage diagrams that
> I have seen have such a cap and I wonder what its function is and how it is
> connected in the circuit.  I am told that the value is 100 mfd @ 50 volts.
>
> Apparently the cap isn't necessary, but since I have a few in my junk box,
> this might be an opportunity to put one of them to use!
>
> 73,
>
> --
> Ken - K4XL
> BoatAnchor Manual Archive
> BAMA - http://bama.edebris.com
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>



-- 
Andrey Fedorishchev,
RA6LBS


www.RA6LBS.ru