I have a UK frequency 12z. It's range seems to be about a 1/4 of either my WC2 or my 9z.(Yes the arial is screwed in fully, yes I hadn't cleaned the arial with oil, yes, I had moved over the channel assignments to the new 12z standard, yes it affects more than one model)

Is there any known issue with using frequncy synthesised transmitters with "Ordinary" (Shultze PPM/PCM ordinary sized or micro receivers)?

Chris