开云体育

I was using my Easy Digi card to interface my iPhone to my BITX40.?

I built a couple of these to interface HTs to iPhones when I was playing around with 2M SSTV.

I posted two videos about this interface. ? ?

So, I was using the interface with my iPhone for some transmitter testing. I did using a spectrum analyzer?on his phone to look at receiver bandwidth. So, I wondered if there were any function generators for the iPhone. I found this . It has tones, sweeps, and noise generators. I did pay the extra couple of $$s to use the noise and sweep generators.? I used the noise generator to transmit through the BITX40 and viewed the result on my K3/P3.

I have also used a couple of resistors 47K/1K as a resistor voltage divider followed by a .15 uF cap in series feed the BITX40 from the iPhone.

I haven't tried using the Easy Digi interface for any of the digital modes, yet. I think PSK may work with the BITX40 using LSB. PSK doesn't care about LSB/USB, except for figuring out what frequency you are using.

I also wired up a toggle RV/XMIT switch across the PTT button, to free up a hand during testing.

Have fun,

Randy, K7AGE

BITX40 SN 139