The AM Forum

I am doing my annual shack clean-out, and I have the following item that is now surplus to my needs:

One used and tested modulation transformer. It was used in a rig that used a pair of 6L6s as modulator tubes,  modulating a single 807. I do not know the manufacturer of this unit, but the following part numbers are stamped in one of the end bells: 121A1 and 549147. I tested and checked the primary and secondary windings for continuity, primary winding to secondary winding shorts, and for shorts to the case, and the transformer tests fine in this regard. The cosmetic condition is good, with the usual years of dust and dirt accumulation and surface scratches in the black painted finish, but it should clean up nicely if you so desire.

The approximate unpacked weight of this transformer is 3 lbs. and the approximate dimensions are 2.5" w X 3" D X 3" H.

Judging by it's size and weight, it is probably good for around 30 to 35 watts of audio, and 60 to 70 watts on the final RF amplifier/secondary side.

It would find good use in a nice low power plate-modulated rig, or for a replacement modulation transformer for your rig.

The price is $20.00, plus the cost of shipment to your QTH from my zip code 11725.

Please feel free to ask me any questions about this item; my e-mail is triodes@optonline.net

Thanks & 73,

Bruce, W2XR