[sdiy] 4 channel mixer of signals with frequencies between 2Mhz and lower.. any circuits available.. ??

[rburnett at richieburnett.co.uk]

> The coil in the oscillator is going to radiate far more than any 
> reasonable-sized whip...

My thoughts exactly.

It's relatively easy to mix the MHz signals together with a decent CFB 
op-amp, but you'll never get a compact antenna that is capable of 
efficiently radiating them all at the same time!  (The OP should read 
about radiation resistance, capacity top-hat and base-loading coil if 
they are interested to understand why this is the case.)

-Richie,