Here's the datasheet for the Si5351:? ???
Looks like indeed it comes in a 10-lead surface mount version.? ?
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"It's a Yaesu FT-891. With the regular sketch, I looked for it from 4.8-5.5 mhz. With yours, I looked
for it about 200 below and 500 above 7.025 mhz
Isn't the Si5351 just a chip? Can't I just replace the chip?"
?1.? The sketch (I just sent it again to be safe) should force your Si5355 to product a
4.925 Mhz Signal.? ?So you would cozy the input coax center conductor ofyour radio up to the raduino output wiring and hunt around 4.925 MHz.? ? (When you add 4.925 + 7.075 MHz, you get 12.000 Mhz --- so that is the reason this VFO setting
shoulld tune the BITX receiver to 7.075 MHz----
but you will NOT hear any signal from the bitx at 7.075 Mhz.....
2.? Si5151:? I had to actually go hunt for it.? ?I think it is a tiny surface mount chip with 5 leads on each side, making a total of 10 leads, soldered in.? ??
Gordon
On Tue, Dec 19, 2017 at 08:38 pm, Gordon Gibby wrote:
?When you get the chance, can you give us more specifics on how you connected your communications receiver, how you hunted for the signal? On what frequencies?? ?
It's a Yaesu FT-891. With the regular sketch, I looked for it from 4.8-5.5 mhz. With yours, I looked for it about 200 below and 500 above 7.025 mhz
If it truly isn't there --- andyou CAN get the 25.0000 MHz signal (still, right?)? then it is possible some portion of the Si5351 isn't working properly.? ?I'm not an expert onthat system of phase locked loops etc.?
Isn't the Si5351 just a chip? Can't I just replace the chip?
