I think this deserves it’s own write up now that I have played with it a bit. When I got the radio it was set up in Code 4 from turn on. I thought it was a little bit hamstrung but after changing it to code 3 the 7500 comes alive. All Ham features work, so we have the full range of steps, split operation and repeater functions and a much cleaner screen. Getting close to the functionality of the OPTIMA and quite ahead of the Anytone radios by getting rid of the 40 channel shit completely. The default 10khz steps work up and down from 24mhz thru 29mhz. The other steps just spin and will not advance the next digit.
Code 3 Rules!
No DC Filtering????
Band Pass Filter !!!!
Just don’t forget where each one goes if you ever have to unplug them. It sure is nicely laid out board. I guess they felt it didn’t need any shielding for the finals. No issues so far.
The Final stage. Simple is sweet. What’s with the coil? Is that what it took to tune it? I aint touching it! Note the bridge for adjusting final bias in foreground. It is a cool running radio in SSB with 30w PEP.