Front Panel Thoughts HFSP3 100W Amp

I have been working with the schematic and selecting parts that will allow me to mount all the panel parts on the PCB to eliminate wiring. This is what the circuit board looks like before it is routed.

See A/W parts placement below:


We have the row of SMA connectors at the bottom with the T/R relays just above that. The relays are placed on the panel side to give more finger room when attaching the SMA cables. The RF IN/OUT and PTT cables will run along the bottom of the case to the rear panel while LPF cables will route easiest path to the LPF module.

The two flat cables snap-in on the left side. One goes to the AMP and the other goes to the LPF. There is a row of LEDs mounted on the panel side that poke through corresponding holes on the front panel. The same goes for the three toggle switches and two LEDs at the top. A meter output jack allows you monitor the drain current for the MOSFETS. There is also a jack for a fan.

See the front panel drawing below:


This is what the front panel would look like. Note the size of the front panel. It is 1/2 inch wider and 1 1/2 inch taller than the HF PackerAmp V4. The hidden line is the circuit board dimension of 3×3 inch. Parts selection was important so that the toggle switches, rotary switch and LEDs have the same height.

You will be able to switch from CW to SSB optimization and turn the AMP on/off from the front panel. LEDs indicate TX and power. Your simple volt meter will allow you to set the bias and monitor amperage during transmit.

If you have comments or ideas, please feel free to share them with me.

73, K5OOR –  Virgil



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