I do not intend to include CW provisions in the design and there is also a reason for that decision. Once we get the Superhet working -just a few more boards will get us a SSB transceiver. I also think many DSB rigs result from an inability to execute a SSB transceiver. DSB while it enables phone operation it does take up more spectrum as you have both sidebands present. Initially I thought about a DSB transceiver but reasoned thinking has suggested that might not be a good plan. The next posting will detail the three remaining blocks. Thus we have DCR > Superhet RCVR> SSB Transceiver. I next will be covering the remaining 3 blocks inclusive of a simple LO, the Band Pass filter and the Receiver RF Amplifier which again employs two J310's configured as a DGM.Д«ut before covering these itemsВ I wanted to layout a bit of the additional architecture that will finally get us to a 40M SSB transceiver with an intermediate stop as a superhet receiver. QRP is QRP В BUT QRP IS NOT exclusively the same as CW! I can't believe I would even dare suggest the use of CW - but until the SSB transceiver is built youВ would have a rig you can put on the air. I am leaving some of the work to the builder! The Low Pass Filter Constants are taken from the W3NQN publication (QST 1999) which is available on the internet. I did not use an IRF510 but there is no reason why it can't be used. The final is connected to power at all times. When you hit the key a 'timed voltage' is applied to the 2N3904 Oscillator and the buffer is keyed. There are some nuances that could be easily missed. I plan on recapping the project so far in the next post as the info was provided quickly and not everyone can read my mind. I would recommend limiting the VFO to say maybe 100 kHz and then that would give a slower tuning rate. So now with a bit of antenna switching and adding the special keyer/power module this could be put on the air as a QRP station.

I did listen to the signal on the Reverse Beacon Network and was heard out in Arizona.

Af filter superhet