Offering a near mint, single 3-500Z, Ameritron AL80 compact, table top
linear amplifier for dedicated 575W OUTPUT (90 Watts drive) 6m
operation. The unit has been completely rebuilt around a brand new HD
plate transformer (no voltage sag) and a full wave bridge rectifier
replacing the doubler circuit. The diodes, filter capacitors( Nichicon
330mFd@ 450VDC) and bleeders are all placed on a single board, Broad
banded pi-net components allow for 1mHz excursions without retuning when
chasing DX. Provisions are made for filament voltage adjustments i.e.,
preventing fatal filament overvoltage using a nichrome wire series
installed strip in the transformer scrondary. Unit has been designed for
fully compatible use with the new solid state exciters with a 12VDC
antenna changeover relay. A front panel fully adjustable exciter input
"T" match and a mica blocking capacitor assure absolute minimum SWR
resulting in full drive. Unit appears stock in all aspects except that
the bandswitch has been replaced with the "T" match on the front panel.
The amplifier is wired for 115VAC operation. Asking $625* without a
tube. $725* with a full output Eimac 3-500Z. Ron W2CQM/3
Note: 1. * plus shipping
Note:2. For the AL80 project digitals, see
HTTP://briefcase.yahoo.com/W2CQMron and click on the " Ameritron AL80 6m
Retrofit".
Epilogue: visit www.QRZ.COM/W2CQM for a listing of the most recent
articles authored by W2CQM.
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