Bug #1615: Yaesu VX-8DR - Cannot be imported because mode NFM not supported - CHIRP

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Bug #1615

closed

Yaesu VX-8DR - Cannot be imported because mode NFM not supported

Added by Cody Cook over 10 years ago. Updated almost 5 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Bernhard Hailer

Category:

Target version:

chirp-legacy

Start date:

05/06/2014

Due date:

% Done:

100%

Estimated time:

Chirp Version:

daily

Model affected:

VX-8DR

Platform:

All

Debug Log:

I read the instructions above:

Description

Hello,

I use Yaesu VX-8DR and I cannot import my csv of my local area into this radio because of this error. The radio does in fact support NFM.
I was reading a bug on this opened a year ago (Issue 291 (http://chirp.danplanet.com/issues/291)) and was wondering if this could be related.

What can I provide you to fix this?

Thanks.

Files

VX-8DR.img (63.7 KB) VX-8DR.img

Steve Bouché, 05/06/2014 09:30 PM

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Updated by Steve Bouché over 10 years ago

File VX-8DR.img VX-8DR.img added

Can confirm the bug as well with a VX-8DR.

I've performed a factory default on my radio and inserted three channels manually:

Ch 1 - 144.010 AM
Ch 2 - 144.010 WFM
Ch 3 - 144.010 FM

Downloaded the radio image via Chirp 0.4.0 and it has been attached to my comment.

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Updated by Steve Bouché over 10 years ago

Forgot to specify the narrowband channel... Just in case it wasn't clear:

Ch 1 - 144.010 AM
Ch 2 - 144.010 WFM
Ch 3 - 144.010 NFM

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Updated by Brandt Belknap over 10 years ago

Same issue with the Kenwood TH-F6.

I see that the TH-F6 uses FMN instead of NFM. Maybe this is the source of the problem?

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Updated by Bernhard Hailer about 5 years ago

I might have found the issue with the Yaesu VX-8 driver code, it's a single bit in memory for each channel (Yaesu calls narrow-band FM "half deviation"; what they call "NFM" is regular channel bandwidth for ham bands FM, as opposed to WFM, bandwidth used by broadcast stations). I might be able to fix this once I have a working programming environment for Chirp.

As for the Kenwood TH-F6 mentioned in post no. 3, there is no solution. Unfortunately that radio does not allow to set narrow band FM per channel: the user can only turn it on or off globally. For that radio, you must program the channels in full bandwidth, and either enable narrow band FM globally (and risk being received with too soft audio), or keep it on regular bandwidth and keep your mouth farther away from the mike when transmitting on narrow-band channels so that you don't over-deviate. Not a very good solution, but it works.

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