Lafayette HA-230 - Lafayette HE-30 - Trio 9R-59
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The HA-230 is a basic communications receiver sold in USA by Lafayette Radio Electronics in 1966. Like other Lafayette radios, the HA-230 was produced in Japan by Trio/Kenwood. It is essentially the same as the HE-30, or the Trio 9R-59, apart from having the HF Oscillator and Mixer filaments permanently on (via a dedicated transformer, see below) to improve the stability. The unit covers the spectrum from the AM Broadcast band up to 30 MHz in four bands. A calibrated band spread dial is used for the Ham bands (80-40-20-15-10 meters). The IF is 455 kHz.
The HA-230 has one RF stage, S-meter and a tunable BFO/Q-multiplier. However one cannot use the BFO and Q-multiplier functions at the same time since they share the same circuitry. Despite the lack of a product detector, SSB reception is decent provided one uses carefully the manual gain (volume) control (MVC).
The HA-230 in 1967 was replaced by the 5-band HA-700, which maintained the "always on" filament feature, gained a ceramic filter and a product detector in the IF, and lost the questionable Q-multiplier. In 1968 the HA-700 was replaced by the solid-state HA-600.
I got my HA-230 through Ebay USA. In practice the shipping charges to Europe where higher than the receiver's worth. I had to install a step-down transformer from 220 to 117 V using an inexpensive transformer for industrial controls I had in my junk box. See here for the schematics.
Bands |
Tube complement |
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Dimensions and weight: 18 cm high, 38 cm wide, 25 cm deep. Weight: 9.5 kg Power requirements: 117 VAC, 50 W. |
When I tested the receiver after purchase it basically worked, but had a lot of audio distortion. This was reduced by replacing a leaky C23 (detected because of +0.8 V on the 6AQ5A grid). Some distortion is still present especially on strong stations. I should probably check the capacitors on the AVC line for leaks since the AVC does not look to work too well.
Alignment history (the calibration keeps moving):
- March 2006
- November 2006
My receiver has a power-line leak problem (mild but annoying shock when touching the chassis). This is enough to knock off the house differential switch if the chassis is grounded. I replaced C28 without improvement. Reversing the insertion of the power plug reduces/suppresses the effect. To find the correct orientation touch the ungrounded chassis with a neon tester: it's OK when the lamp is off.
HA-230 operating manual (from BAMA site)