TKX30 Firware?

[KF6OWC]

I am putting a couple of th 730's on 2 meters one goes down to 144 just fine and still cover the upper end of VHF high the other wont do that. does this have anything to do with the firmware? the one that works fir has the FAC eprom the one that doesnt has the FAB eprom. where can I find the FAC firware so I can burn a new chip? or is there newer firmware I should look for? I have read of a FAD eprom. any suggestions?
TNX Jim

[ka7wnf]

The firmware has nothing to do with the range of the radio. You need to retune the radio and adjust the VCO.

[KF6OWC]

I have done this. the second radio has nuch narrow PLL as compared to the First radio which the PLL lock over a greater range 144-172 mhz. any other ideas?

[ka7wnf]

No not really. Some radios just won't lock at lower frequencies and some will. I guess the answer is to locate one of the hard to find low split TK-730's.

[KF6OWC]

ANy ideas on what serial numbers to look for. the one that locked below 148 I dont have here any longer, anybody post there serial numbers of 730's that locked below 148? tnx jim

[kk6rq]

In my albeit limited experience, the G (narrow-capable) models had a fixed TX VCO and the normal
radios had adjustable VCOs. Referring to the high-split, of course.

eg. G models were a waste of time for Ham use. Since they didn't do 7.5KHz stepping they weren't
much use for narrowband either...