Here are the specifications of the Hammarlund HQ-215.
- Double conversion superhet. First IF is 3.055MHz. Second IF is 455kHz.
- 26 silicon transistors, 13 diodes and 2 Zener diodes in the full wave bridge, regulated power supply.
- Frequency Coverage: 3.4 - 30mHz in 24 200kHz segments. Segments are selected via a front panel bandswitch. The frequency coverage for each band is based on crystals installed in a crystal socket section.
- Antenna Input: 50-75 ohms - unbalanced
- Audio Response: 250 Hz to 6.5kHz +-3 db
- Audio Output: Greater than 1.5 watts with less than 10% distortion into 3.2 ohms.
- Modes: AM, CW, USB, LSB
- SSB/CW Sensitivity: Less than 0.5 uv for 10db signal plus noise to noise ratio.
- AM Sensitivity: Average 1.0uv for 10db signal plus noise to noise ratio.
- Selectivity: 2.1kHz mechanical filter with 2.1 shape factor.
- Optional Filters: 500Hz, 6 kHz
- Image Rejection: Better than -50db
- Stability: <100Hz per hour
- Frequency Readout: +-200 Hertz on all bands.
- A.G.C.: Selectable - slow/fast. Attack time less than 5ms. Slow release greater than 2s. Fast release less than 0.5s. Less than 10db output change with 2uv to 20,000uv input change.
- Noise Limiter: Self-adjusting series type.
- Power Requirements: 117/234 volts, 50-60 Hz, 19 watts. Also works with 12-15 VDC (negative ground only).
- Dimensions: 15.8" wide, 6.8" high, 14" deep.
- Weight: 18lbs
- Manufacture date: 1968-1969
Latest update: 03/30/03