OK, don't get on here too much (usually hang out on HFU) but having read a few posts (and PM's) it looks like a few folk could do with some helpful advice.
Radio can be somewhat confusing and there's so much (mis)information about it, it's bewildering!
I decided a few years ago to build a simple A.M. Transmitter that would TX a 10W carrier (40W peak) and would work on any (Xtal controlled) frequency.
I decided on using a PWM modulator but was told as most folk used 12V that a modulation transformer would be better to achieve the required power so found a suitable readily available modulation transformer core and bobbin and wound my own.
The system (mainly for 43/48m) works well and have sold many and now sell a complete boxed TX, plug and play I guess.
However I really think PWM is much better and have decided to launch a MW (1.5 - 1.6 MHz approx.) version of my TX.
Carrier power is variable depending on voltage, so with 12V, carrier = 2W5 max, 24V, carrier = 10W, & with 48V carrier = 40W, peak O/P is 4X so 120W with 48V.
Modulator is PWM and will pass BASS frequencies to Sub Hz. Can supply a remote antenna matcher too to match a long wire over 50' or so.
So I guess I'm gauging how popular these may be. I already have some PCB's made and populated so I know the system works well but have to get it cased so it will be plug and play too.
