In my effort to replicate the ET-1 rig of Glen Yingling W2UW, I had a hard time getting the receiver to work well with the single FET being switched between receiver and transmitter, so I retreated a bit and went with individual FETs for the TX and the RX. This doubled the transistor count -- to TWO. So it is an ET-2.
I also boosted the power to 80 milliwatts by putting 12 V on the transmitter. The receiver was running off the 9V battery you can see in the left in the picture.
Here is the story of the contact:
To K4MQG from N2CQR: |
Gary:
Wow thanks for the QSO today. I was using 80 mW transmitter that
consists of just 8 parts! The receiver was a regen using one single
transistor. So one transistor on transmit and one transistor on
receive. And it reached South Carolina.
I
was about to give up hope. I had been calling CQ for days. Then I was
talking to Rob VE4GV on 20SSB. Rob suggested that I "spot myself" on
one of the DX clusters. So I did (see below). Obviously you saw my spot and a
minute or so later, SUCCESS! I'm really pleased.
Attached
is a picture of the rig. The transmitter is around the crystal and the
blue pot on the right. The headphones are from WWII. The receiver was
powered by the 9V battery. The regen uses a variometer given to me by a
friend in the Dominican Republic in 1992. The main tuning dial is
connected to the cap by an adapter from a 1930s-era regen. Antenna was a
40 meter dipole at about 25 feet. Obviously your 3 elements a 115 feet
were doing the heavy lifting.
Thanks again Gary!
And thanks to Rob for the suggestion on the spotting.
Bill,
ReplyDeleteLove the T/R switch!
Very cool radio. Funny how it takes more work to do the same thing with less parts. Seems and oxymoron.
73, Keith N6ORS
Where does the radio begin and end? It is the perfect rats nest!
ReplyDelete- Farhan
QRP homebrew at https://vu3inj.blogspot.com
ReplyDelete