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ASTRO Saber III Question - Odd behavior w/ direct

Posted: Tue May 17, 2005 7:32 am
by kgb
I'm experiencing some 'interesting' behavior with an ASTRO Saber III just purchased a week ago. It's an H04RDH9PW7AN (403-470) w/ the usual Nick 591008-4F1E00-9 flash. HOST version is R07.11.00 & DSP N08.02.06.

Anyhow, the problem I'm having is TXing on frequencies roughly the range 448.40-449.620Mc. I haven't tested any others to see how much narrower I get before it refuses to TX, but this has me curious. So far as I can tell, this occurs *only* when trying talkaround. Other frequencies programmed in that fall within this "window" work OK when they are part of the normal TX/RX pair & not in the 'direct' field.

When I attempt to TX on these channels, the radio keys for a brief moment but quickly stops TX & gives a tone. It also flashes the mode tag but not long enough to read the message (FAIL 001 ?). Might I need to re-align something? I just discovered this today. Any help would be appreciated... other than this, the radio works great.

-KGB

Posted: Tue May 17, 2005 10:56 am
by willbartlett
Meaning that if you are in a repeater split, say 443.5 rx and 448.5 tx, it will tx, or do you get no tx in that scenario as well?

Without any additional info, my gut instinct is that the vco crossover frequency needs to be shifted. if it's only inop in direct and works in repeat, it's possibly a setting in the direct crossover value, and I'm not sure that exists in the astro saber, I've only seen that setting in the 900 mhz jedi series, which uses 2 discreet synthesizers.

sounds like an alignment issue honstly

Will

Posted: Tue May 17, 2005 11:09 am
by The Pager Geek
Step one: Verify the RF board part number is in fact a 403-470 board (not a 450+ board)

Step two: Re-align it

If that doesn't correct it, sounds like a defective RF board.

tpg

Posted: Wed May 18, 2005 12:26 am
by kgb
The radio works perfectly with the 420 & 430 freqs that I have in it. Doubtful that it's a 450+ board. It does work in the repeater split scenario like you point out, willbartlett, so I'll give that a try. Thanks.

Posted: Wed May 18, 2005 5:01 am
by kgb
Thanks guys, I changed my TX crossover freq. to 448.200 (an educated guess based on my experience) and so far, problem solved. 449.50 was the old (default) crossover freq. This had actually been my first thought of what to change, but I wanted to run it up the flagpole before trying. Never hurts to have other opinions. Thanks again.

-KGB

Posted: Fri May 20, 2005 7:07 pm
by vr2xst
Dear KGB,

Don't you mind send me yr codeplug ?

73