[AMRadio] HB Xmtr, was: Home Brew AM Transmitter Wanted


Brett gazdzinski brett.gazdzinski at verizonbusiness.com
Tue Mar 28 13:09:03 EST 2006


Peter Dahl sells reactors.
I have one, 50H at 400 ma (pair of 813's run 400 ma).
I think it cost $250.00. Its nice and small.

My rig sounds better without the reactor.

I have one of those big RCA mod transformers in there, they sound
great, much better then the CVM5 I had in there.
 
Brett
N2DTS

> 
> Larry Keith wrote:
> 
> >From looking at the xmtr and power supplies
> >schematics, it appears that the only "scare" parts are
> >the modulation transformer and the Heising choke. 
> >Would anyone care to comment of availiability of such
> >items?  Specs shown are:
> >
> >Mod Xfmr -- 300 - 500 Watts, 2:1 step down.
> >
> >Heising choke:  50 H @ .5 A
> >
> 
> I don't have a lead on where you can find a mod transformer, 
> but as far 
> as chokes are concerned, you don't -have- to have just *one* 
> choke.. you 
> can string 5 10Hy @ a half an amp chokes in series, and get 50Hy's. 
> 
> I had to resort to the same thing, when building my reactor.  Never 
> could find a single 50 or 60Hy choke at a half-amp... I now 
> have 120Hy @ 
> 400mA, but had to put 6 (or 8?) of 'em in series to get where I am.
> 
> --
> 73 = Best Regards,
> -Geoff/W5OMR
> 
> 
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