- Mar 22, 2008
543,I think they are good rigs. I am impressed with the receiver sensitivity. Not sure how it is in a mobile environment. I have the first IF in mine tapped to use an sdrplay for the rx. I can hear good wideband AM, use it as a panadapter to see the whole 11 meter band and even listen to SSB.
I was hesitant about the surface mount stuff but the 2016 cobra 29 ltd classic I bought was much lower quality. Even after the same alignment I give my other radios the rx was poor.
I've been wanting to try the string of diodes in series with d8 on a cobra 29 to lower the carrier. That with the keep alive circuit toll free posted here years ago is supposed to make a much cleaner waveform. Looks like its based on the 3 diode ultra modulation circuit from the 1950s.
Interested in your IF tap and what kind of performance you were getting. I been wanting to build me a circuit to interface my dongle. Didn't know if they needed a buffer and/or LNA. Following your progress on the 3 diode TF mod.