Production Year 1958 - 1962

The Hammarlund HQ-170 is a 17 tube super heterodyne triple conversion receiver that covers the 160 through the 6m bands in 7 segments. The receiver has an adjustable slot filter that provides up to 40db of attenuation to help eliminate unwanted interference over a 10Kc range. In addition, a slot depth control can provide an additional 20 db of rejection at any one single frequency. A linear product detector, separate from the AM modulation detector, is used for CW telegraphy and SSB detection.

The 17 tube lineup is as follows, a 6BZ6 = RF Amplifier, 6BE6 = 1st Mixer, 6BE6 = Converter, 6BA6 = IF Amplifier, 6BE6 = Converter, 6BA6 = 60Kc IF Amplifier, 6BV8 = IF Amplifier, AVC, AM Detector, 12AU7 = SSB Detector, 6AL5 = Noise Limiter, 6BZ6 = Crystal Calibrator Oscillator, 6C4 = HF Oscillator, 12AU7 = BFO & S-Meter Amplifier, 6AV6 = 1st AF Amplifier, Delayed AVC Gate, 6AQ5 = AF Output Amplifier, 5U4 = Voltage Rectifier.

The power requirement is 120 watts at 105-125 volts AC.

The unit measures 10.5" x 19" x 13" and weighs 38 lbs.

I know this receiver is tough to look at and not feel saddened by it's condition. But rest assured it will be restored to it's former glory. I took these pictures while waiting for the air compressor to re-fill.

There are a lot of tricks out there to getting the dust and grim out of these electronic items. Some folks have been known to use things such as a pressure washer, garden hose, dishwasher, compressed air and just about any thing else. You think some of that is strange? Have you ever heard of some one sticking a part of their radio in an oven? Yes, I said an oven!! Well it does happen and it is a good way to get the moisture out of transformers that have sat unused for an unknown amount of time. A microwave oven will not work. There are other restoration techniques that we use the microwave over for which is discussed in the Electronic Repair section.

The photograph on the left shows the backside of the clock and the rust that has formed on it due to this receiver being badly neglected. 

The picture on the right is a photo of underneath the chassis with the cover removed. From this view point one would think that it is two different radios shown on this page. It is but one and the underneath of the chassis does not look half bad at all. As a matter of fact, it is in such good shape that a previous owners social security number is still easily readable.