From my experience with the low-band Mastr-pro transmitter (in this
case exciter) ... the final grid coil will probably need one turn to
be removed to get it to tune to the 53.19 frequency.
73,
Neil - WA6KLA
Virden Clark Beckman wrote:
>
> First - does it work on the freqs it came with? cg=channel guard,
> nb=noise blanker, if it a m-pro instead of mastr2 it will have peach
> colored castings where the xtals mount and there will be 2 swing out
> trays, one is the tx on top - the larger one, remove the driver tube
> before trying to get the new freq. to oscillate excess mismatch to
> this tube will cause plate heating and quick failure while you are
> twisting those coils, I think it is a 8107 and last 2 I got from
> auntique radio they were 25 bux new-old-stuff - but it will go to
> 53.19 without any deep mods. Same for mastr2 - no big mods just make
> sure it works before dropping good money into a bad unit. Either one
> makes a good repeater as long as you keep the fan in the circuit, do
> not defeat any of those switches on the high power pa deck, there
> are some lethal voltages in there - 1300vdc for the 3cxx00 - before
> you power it up you might want to check the bleeder resistors for
> continuity on each of the high voltage caps, if any of them are
> burnt replace the set as it is just too risky at that voltage level.
> If you get careless as I have done you will be staring at one really
> bright flamethrower, it can easily light up steps going up 2 floors
> at night, and I hear it looks really cool from the mcdonalds across
> the street.
>
> --
> 73...Clark Beckman N8PZD
>
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/
<*> To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
