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Author Topic: My new QRP rig  (Read 719 times)

Offline PG4I

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My new QRP rig
« on: December 01, 2014, 20:47:13 UTC »
I tried out a new setup during the CQWW contest.

Bottom of the picture, right to left: 14 MHz VFO, R1 direct conversion receiver (design by Rick Campbell KK7B) and transmitter with 2N3553, 2 Watt out max. The modular approach is very inviting for making experiments, e.g. I plan to replace the VFO with a DDS design in the near future.

Joop - PG4I/QRP

Offline PG4I

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Re: My new QRP rig
« Reply #1 on: December 16, 2014, 10:18:24 UTC »
Just finished a QSO with the new setup. I have added a DDS (Alu case on the right). It is basically a little AD9850 board from ebay, controlled by an arduino UNO. The DDS has a RIT and LCD. On the back I have a PTT input from the keyer which controls the RX/TX shift...
Joop - PG4I/QRP

Offline GM0LVI

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Re: My new QRP rig
« Reply #2 on: December 16, 2014, 20:08:54 UTC »
Some neat engineering there Joop!
Dave

Offline vu2nan

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Re: My new QRP rig
« Reply #3 on: December 20, 2014, 05:32:52 UTC »
Great show, Joop!

73,

Nandu.

Offline PG4I

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Re: My new QRP rig
« Reply #4 on: December 20, 2014, 13:19:40 UTC »
Thanks guys! More to follow...  ;D
Joop - PG4I/QRP