--- In digitalradio@yahoogroups.com, "Andrew O'Brien" <[EMAIL PROTECTED]> wrote: > > I am about to order a USB external sound adapter for US$6.50. The > shipping however is $8.00 , more than the product itself ! So, > perhaps I should order several of them and just mail them to others > than want one. They apparently weigh 4oz, sticking one in the US mail > should cost a couple of dollars, not 8.00 (a guess) I have seen a > couple of well known hams use these for digital modes. > > Anyone else want one ? > > Andy K3UK >
Hello Andy, I have used almost the similar USB sound adapter and made a modification to get a very high precision sampling rate. My module has a 12 MHz crystal and CM108 codec inside. It was only necessary to cut one of crystal wires and feed 3 V level from my double-ovened reference oscillator (by resistance division from 5 V TTL). 73 Matti/OH2ZT
