[chirp_devel] VX-7r: power levels for 1.25m band

[Dan Smith]

> The Yaesu VX-7r supports L1 and L2 power settings for the 1.25m, but for 
> some reason Chirp will not accept L2 for that band.  Looking at the code 
> in chirp/vx7.py I see where the check is made and L2 should be accepted. 
> I cannot figure out why this check refuses to accept L2.  The workaround 
> is to manually reset the power level to L2 and re-save.  Has anyone else 
> tried to fix this?

Nope, I had it in the queue. Now that you asked, I looked and I see the
problem. Skipping down:

> Looking again at chirp/vx7.py, I see statements that look
> like this:
>    chirp_common.PowerLevel("L2", watts=0.30)
> What does that "watts=0.30" mean for the rest of Chirp?  Will that
> interfere with the power mod mentioned above?

The reason we tie an actual signal level (in watts or dBm) to a
PowerLevel is so that during import or copy/paste, we can attempt to
select a similar power level on an incompatible radio based on the
available power levels. The problem here is that the VX7 driver declares
to the outside world the main list of power levels. That means that when
the user selects L2, it passes the 1-watt L2 power level into the
validate operation, and the driver balks at the request for a power
level not supported on 220.

There are two options here:

1. You can declare the 220 L2 to be the same power as that of the main
   list and then the comparison will succeed. The potential for error
   here is very minor and I think intentionally misrepresenting the 220
   power levels are unlikely to cause anyone heartache
2. You could change the check to something like this:

   if str(mem.power) not in ["L1", "L2"]:
       # Fail

   Effectively changing the 220 comparison from absolute power level to
   by name.

> Slightly related to this problem, one can modify the VX-7r to boost the 
> transmit power for the 1.25m band.  This is done by entering the factory 
> setup mode. 

Interesting. Got a link?

-- 
Dan Smith
www.danplanet.com
KK7DS

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