Re: 60 mtr rig
Don Wilhelm <w3fpr@...>
Add a mixer - and rather than crystals, use a DDS controlled by a Raspberry Pi.toggle quoted messageShow quoted text
The RF section from the mixer to the final output is no more difficult than for more simple rigs. 60 meters and 40 meters in the same rig is possible with a low pass filter having a cutoff frequency of 8 to 9 MHz - so the dual band operation is simply a matter of programming.
Add a relay to the LPF to bring the cutoff down to the 6 MHz region and 80 meters could be easily added.
With the mixer already included, it is conceivable to expand it to SSB and DATA mode use as well with just the addition on a balanced modulator and some audio input circuits.
On 7/10/2015 8:38 AM, wb8yyy@... [4sqrp] wrote: