2x Mirage B108 2M 80W amps, Tokyo HP 60W 430 amp, , 430 25W module for sale
Mike Lewis
More shack cleanout.
I have 2x Mirage B108 2M amplifiers. They are roughly 10W in for 80W. Spec’d for 15W max, 10dB gain preamp, 13.8V@10A.
I bench tested them last night.
One of these is modified to split the RF. It uses the RF preamp relay to direct the RX RF to a BNC connector on the back. The front panel preamp switch turns this feature on and off. I assume the internal preamp is not working but these are relatively easy to repair. Using the IC-705 which puts out a bit less than 10W, I get 50W out on a 500W slug at 10A. $50.
The 2nd B108 is stock, preamp working. It gets 55W at 9A. $75
Both have phono jack added for easy PTT cable connection and both modified to use a PowerPole chassis connector. Pics are attached.
25W 432 RF amp with heat sink. 10mW drive. Needs 24V for the driver amp stage. Needs 14V and 9V (bias V) for the final stage module. ¼” aluminum case sides on the heat sine, no bottom cover. Was mounted on a chassis panel. $10
Last is the Tokyo HiPower HL90U. This was bench tested recently and puts out 60W for about 10W drive. Front panel analog power meter. The PIN diodes in the outputs have failed and I moved diodes from other parts of the circuit to replace them until there were no more left to move. I fit in a mechanical output T/R relay. Preamp is not working, something else that has seen many repairs over the years including a new relay squeezed in. Still, it is good for making 10W into 60W on 430 band. PTT is a phono jack and power is length of cable with a PowerPole connector. The entire case is a huge heat sink. $40
- Mike K7MDL
