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Author Topic: MMSSTV Question  (Read 2932 times)

Offline flexoman61

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MMSSTV Question
« on: August 23, 2015, 1619 UTC »
My lame computer skills are going to show,
but how do I adjust the slant on my SSTV
images?

I don't see a lot of settings.

Attached images show it starting on left side
and it gradually skews as image continues
to decode.

Thanks
Please QSL to: flexoman61@gmail.com
Connecticut
Icom R75/Kenwood R-2000/DX-160/DX-300
200' longwire/43m band folded dipole/VHF ground plane

Offline Lex

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Re: MMSSTV Question
« Reply #1 on: August 24, 2015, 1849 UTC »
It's been awhile since I've needed to adjust MMSSTV - probably 2012 on this PC.  It's affected by the sound card clock speed, which may drift over time.  There's an easy drag to adjust method using any standard time signal frequency as a source.  This tutorial explains it well.
That li'l ol' DXer from Texas
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Offline radiogaga

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Re: MMSSTV Question
« Reply #2 on: August 25, 2015, 1950 UTC »
Try options tab>setup mmsstv>rx tab>check box for auto slant, then click ok.

hope this helps.

Lex instructions are good for tx slant adjustment, spot on

rgg

Offline Token

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Re: MMSSTV Question
« Reply #3 on: August 25, 2015, 1959 UTC »
RGG responded literally as I was typing.

The tutorial Lex linked to is for hams that will both receive and transmit SSTV.  Its stance of not using auto slant is solid advice if you are going to both RX and TX.  But from a purely receive application there is no reason not to use auto slant, in fact it is preferred.

My advice for people receiving only, do the alignment as defined in the tutorial, and after complete then select Auto Slant as circled in the 2nd image on that page.  If you do not select Auto Slant then anyone who transmits with an incorrectly adjusted slant will appear slanted to you.  Having Auto Slant not de-selected is great if everyone is correctly aligned, but if anyone is not then Auto Slant can save an image.

T!
T!
Mojave Desert, California USA