Hallicrafters S 108 Receiver

General coverage receiver, with external narrow band I.F. filter & automatic gain control unit I built, for sale on eBay.

[@pauloakgrove5540]

boy this took my back to high school day. I was K7QLD in the 60s.

[@chasgantz3059]

I played with my Dads back in the early 70's. I just recently picked up another one for $20

[@jsb1964]

Thank you for the video! How does the narrow band filter connect to the radio?

[@larryjackson6064]

The CW sounds great ! I traded for this one and a SX-110 today 2/7/2017 lol ! 73 de KK4SPW

[@richarddalton5191]

Wish my s-120 sounded half as good Picking up so much garbage Need to find better antenna

[@dhsconsultingyoutube5289]

I just got mine the other day! Would you have any advice on how to get it up and running?

[@plinthley]

Complete novice here. What does the unit on top of the radio do? Preamp to boost signal from antenna?

[@HiFiTubeGuy]

It's a combination of a narrow-band IF filter (to reduce interference from signals on adjacent frequencies), and an automatic gain control (AGC) with adjustable attack and decay (to reduce gain on strong signals, and keep them at approximately the same volume as the weaker signals).

[@ces4399]

@@HiFiTubeGuy I would like to copy that circuit (at least the AGC part). Would you be willing to share this circuit? Thank you.