The Transmitter is built into the chassis of an HP 436A Power Meter with custom front and rear panels. A single screw on each of the top and bottom covers allows the respective cover to slide off the chassis providing quick and easy access.
On the right hand side of the chassis adjacent to the front panel are the following boards, from top to bottom.
- SSB Generator Board – Audio Input, Carrier Osc. (BFO) Amplifier, Balanced Modulator (TUF-1), and SSB Filter.
- 1st and 2nd Mixer Board – identical to board used in the Receiver
- Three BFP boards, 160M – 10M
- Driver Amplifier – 0.25W
All frequency generation and control is done in the Receiver. LO, VFO and BFO (Carrier Osc.) signals are fed to the Transmitter via SMA cable assemblies. Split frequency/band operation is possible using VFO A & B on the Receiver with VFO B designated for TX.
The bottom deck contains the Arduino Mega with a breakout board; Power Distribution Board providing unregulated 13.8V, regulated 12V and 5V; I2C Relay Control Board.