Hi Mike, Paul et al
I don't know, using 5068.8kc rocks would end up with a 2.4kc center freq
in the audio output.
Hans, what do you think?
Certainly the frequency of the 5068.8 rocks can be pulled easily.
One thing to bear in mind: This receiver is a very basic design utilising two SA602's. The strong signal performance, IP3 and Dynamic range, AM broadcast breakthrough etc will all be quite poor.
Steve G0XAR and I are currently working on a QRSS receiver kit to complement the QRSS beacon kit. The kit price will probably be somewhere in the range $15-$30, I can't be more precise yet. This will not be a simple, basic receiver! My design goals for this receiver are as follows:
+ Very high performance, single band receiver
+ Single signal reception (not Double-Sideband)
+ Crystal local oscillator, or option for DDS input
+ Easy to build: no complicated adjustments, no test equipment needed
+ Low cost, in the range $15-$30
+ Output direct to sound card input, will work with Argo etc
By "high performance", I mean that this receiver has a strong front end with an IP3 of around +30dBm, which will outperform the vast majority of commercial ham equipment, let alone homebuilt.
I hope to have this ready in a few weeks. So if you can wait, it might be worth waiting for ;-)
72/3 Hans G0UPL
