I emailed AR and the new keyboard of the F165 is fine to use with the PERL.
- Frequency Output: .001 to 28,000 hz square wave @ 100% modulation and up to 400,000 hz @ 5% modulation
- Frequency Carrier: 27,125,000 hz (+/- 2000 hz)
Guess this means it has a carrier wave built in and you get a true square wave up to 28KHZ.
Just curious since the manufacturer is a day trip away...