Hello-
For sale is the audio transformer set from the Collins built MD-129
modulator power supply.Most transformers are labelled Collins.The set used a
5814A driving pair of 12AX7A driving pair of 6AQ5A driving pair of 4-65A's.
The modulation transformer modulated a pair of 4X150A's in the companion VHF
transmitter. I can furnish complete documentation on this unit in the form
of equip. manual.
A bandpass filter could be switched in / out that provided tighter
audio.
There are 5 pieces counting the bandpass filter.
Audio Input Trans.-------- 40 and 600 oms CT in / 50K ohms out
Bandpass Filter ----------- 400 - 3000 CPS 470K ohms in / out
Driver Trans. ---------------- 750K pri. / 750K CT sec. 200 - 20,000
CPS
Driver Trans. ---------------- Push Pull 6AQ5A plates to P-P 4-65A's
grids
3 watts 200- 20,000 CPS
Modulation Trans.---------- 5500 ohms CT pri. / 2400 ohms @ 350 mA. sec.
rated 150 watts
Also, 2 addt'l sec. windings 600
ohms CT and 50 VDC.
Rated 200 - 20,000 CPS and 1425 VDC
All trans. nice mil. spec. herm. sealed, gray colored and nice cond.
Terminals out bottom all.
Total weight about 35 pounds all. Price is 75.00 Thanks.