Antique Electronics and Vintage Solid State

Heathkit GD-1250 high frequency coil

Over on the Antique Radio Forum, Steve “azenithnut” mentioned he was missing the high frequency coil for his Heathkit GD-1250 Grid Dip Oscillator.

IMG 8017.jpg

His GD-1250 is missing this coil. I thought I’d post some photos of the coil from my GD-1250. …

Heathkit HM-10-A Tunnel Dipper

Over on the Antique Radio Forum, there’s a gathering of grid-dip oscillators.

IMG 8012.jpg

One of my contributions was this Heathkit HD-10-A Tunnel Dipper.

IMG 8013.jpg

It uses a tunnel diode as the active device in the oscillator.

© Steve Byan 2011-2019