[Milsurplus] FS - Modulator Transformer Set from Collins AM set MD-129A

[Byron Tatum]

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.=20
        Total weight about 35 pounds all. Price is 75.00 Thanks.         =
       

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