Frog 40m transceiver
This is the Pixie’s “big brother”. I have mentioned it before in this blog. It has more power than the Pixie and a better RX. Best of all it costs just over £15 built with free shipping from Hong Kong.
See http://www.ebay.co.uk/itm/Frog-Sounds-HAM-Radio-QRP-Kit-Telegraph-CW-Transceiver-Receiver-Radio-Station-V3-/251405614850 .
It looks like it uses 2 xtals — perhaps like the Rockmite ][?? If so, I guess you could put in something like a pair of 7030s o 7040s, which are the QRP “Watering Holes.” 7023 is just below the allowed frequency for General Class license holders in the US.
I bet this would be a hot seller on 7030 instead of the frequency offered. I would have no idea where to buy crystals anymore.
Ever heard of UK qrp kits ??
Try some…. ..
I am guessing that the second crystal is being used to filter out broadcast interference? If so, would it be possible to just replace a single crystal to change frequency? Or do both crystals need to be changed?
Could it also be possible to replace the crystal that’s being used to filter BCI with another form of BCI filter? If so what would be a good option? How about a ceramic resonator that’s on a similar frequency for the 40m band?
That way changing frequencies wouldn’t require changing both frequencies.
Any thoughts anyone?
I AM BUILDING THE FROG XCVR BUT IT DOES NOT SAY HOW MANY TURNS ON THE TORROIDS…L4, L5. COULD USE A LITTLE HELP.
DENNIS – K1LGQ