Eric Lemmon wrote:
> I think you are asking too much of the HT750. I ordered Range 1 UHF
> HT750 radios for my employer, planning for interoperability with a
> nearby Government agency, and it is remarkable that the radios meet all
> specs over the 403-470 MHz range. I have tried to program them above
> 470 MHz, with no luck. The design engineers at Motorola advised me that
> both the software and the firmware will block any operation out of
> band. I think that's a reasonable position, given that the "design
> rules" have already been stretched to achieve a 67 MHz bandwidth.
>
> In your case, you want to make a Range 2 UHF radio meet all specs below
> 450 MHz, and I don't think you can make that happen. Even if you could
> hack the software and firmware to override the bandedge blocks, your
> radio would not be performing anywhere near its in-band capability. And
> performance is a hallmark of Motorola.
>
> I congratulate you on your desire to use a commercial-quality radio on
> the Amateur bands, but I think you're going to need two radios to
> satisfy your wideband objectives. Yeah, I personally like the
> "DC-to-light" capabilities of some wideband Amateur gear, but that
> capability brings along a lot of limitations!
>
> 73, Eric Lemmon WB6FLY
>
Well, my 450-512 split HT1000 works AT SPEC all the way down to below
430...shame the hack won't work for the 750.
--
Jim Barbour
WD8CHL
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