|[AMRadio] Drake L-4B on AM|
rbethman at comcast.net
Thu Mar 6 10:47:04 EST 2008
I use an Amp Supply LK-500ZB with either a DX-60 OR a TS-930SAT.
Tune for 20W carrier out of rig - tune for MAX CRAX out of Amp.
The LK-500ZB is a pair of 3-500Zs. Been running them for about 8 years,
AND they weren't new to begin with.
They do JUST fine!
I now have two BC-610s, so the other ONLY gets used when I want to
Bob - N0DGN
> "BTW, I tuned the amp for exactly 1500 watts output, then reduced the
> drive to exactly 25 watts without re-tuning the amplifier"
> Actually the best way is to tune for 1500 watts out and reduce the
> drive until the output is 375 watts under carrier conditions. Also if
> you have one of those male voices that that will peak more in one
> direction than the other (if the audio is phased correctly) you must
> also de-rate the output power even more. Naturally, a scope and an
> audio generator is the preferred way to tune up a linear under AM
> Ken W2DTC
Bob Bethman/NØDGN/BC-610/Northern Radio
SP-600 Manassas, VA - MultiBand Dipoles
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