[chirp_devel] [PATCH] [TK-270] Allow programming Kenwood commercial UHF radios in the 70cm band. #4709

[Tom Hayward]

On Thu, Apr 13, 2017 at 11:52 AM, Pavel Milanes Costa via chirp_devel
<chirp_devel at intrepid.danplanet.com> wrote:
> F2 type is 470 to 490: 440 is way 30 Mhz down.
> F3 type is 490 to 512: 440 is way 50 Mhz down.
>
> The same for TK370, 372 and 378 type F2 & F3
>
> I can testify that kenwood radios do come off from OEM band edges and
> works a few Mhz outside them, but 30/50 is excessive and I'm almost sure
> that they will not work properly.
>
> This can lead to this tested and verified problems:
>
> 1 - Radio will beep and/or flash LCD numbers when RX VCO PLL is fully
> unlocked. (depending on model/firmware)
> 2 - RX VCO PLL can lock and RX will work, but TX VCO can't and on TX PLL
> VCO will dance spreading noise all over the full fringe zone, in the
> short fringe zone it will produce a loud audible tone for the people
> that are receiving the signal...
> 3 - The inverse of #2 (RX VCO PLL is partially unlocked, funny but
> true), Radio will be deaf and TX will work.

How about this?

self._range = [(low - 10) * 1000000, (high + 10) * 1000000]

Tom KD7LXL