Astro Saber sounds bad on RX

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racerman1cars
Posts: 602
Joined: Thu Oct 21, 2004 5:55 pm

Astro Saber sounds bad on RX

Post by racerman1cars »

Hi all, I have a AS III uhf and on all thev freqs it sounds fine except on metro pd the officers sound fine but dispatch is fuzzy like it is off freq or something, i found under radio wide some settings they are: Type analog, securenet and digital. type linear, compression and AGC. output, total. will these affect the rec? and what do these fields need to be set at?
Thanks Steve
Steve Humphreys
KG4JNQ
Batwings21
Posts: 930
Joined: Fri Jun 23, 2006 11:21 am

Re: Astro Saber sounds bad on RX

Post by Batwings21 »

Found the info, check all three boxes, type is agc, output 0, total is 6. Not sure how much they affect rx if at all.
dxon2m
Posts: 948
Joined: Thu Mar 11, 2004 8:00 pm

Re: Astro Saber sounds bad on RX

Post by dxon2m »

You have to tell us what's "bad", does it sound bad in analog or digital or both? The AGC settings should help you improve it. But if the voice sounds like "off frequency", then something is not programmed right.

Did you check the bandwidth? How about alignments?
racerman1cars
Posts: 602
Joined: Thu Oct 21, 2004 5:55 pm

Re: Astro Saber sounds bad on RX

Post by racerman1cars »

It is in Analog mode it sounds like the base is off freq or over deveating. all others ie: Ham, GMRS and the electric utility.
Steve
Steve Humphreys
KG4JNQ
motorola_otaku
Posts: 1854
Joined: Tue Jan 13, 2004 7:03 am

Re: Astro Saber sounds bad on RX

Post by motorola_otaku »

What's the specific frequency? Don't s'pose it's 453.600..
Batwings21
Posts: 930
Joined: Fri Jun 23, 2006 11:21 am

Re: Astro Saber sounds bad on RX

Post by Batwings21 »

I recently worked on this unit, these are the freqs hes having trouble with
460.025, 460.150, 460.375 and a few more in that area.

Steve, are these simplex or repeaters?
racerman1cars
Posts: 602
Joined: Thu Oct 21, 2004 5:55 pm

Re: Astro Saber sounds bad on RX

Post by racerman1cars »

Pete, these are the receive side of the repeater [Lou Metro PD], the greqa sound fine onmy old Ht-600.
Steve
Steve Humphreys
KG4JNQ
Rayjk110
Banned
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Re: Astro Saber sounds bad on RX

Post by Rayjk110 »

Batwings21 wrote:I recently worked on this unit, these are the freqs hes having trouble with
460.025, 460.150, 460.375 and a few more in that area.

Steve, are these simplex or repeaters?

460.150MHz, Z4 D1/18 CPD here just fine on an AS3 50mi North of the xmitter....



- R
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Josh
Posts: 1931
Joined: Mon Sep 03, 2001 4:00 pm
What radios do you own?: APX4K, XTL5K, NX5200, NX700HK

Re: Astro Saber sounds bad on RX

Post by Josh »

Astro radios are extremely selective to the bandwidth they are set up for and do not like over deviation at all.

If you have the bandwidth programmed wrong, will hear distortion caused by the radio (if it's a 25Khz signal being received on a radio setup for 12.5), clipping of the audio beyond certain limitations.

The same holds true sometimes on the 25Khz channels even when programmed correctly. If the signal is overdeviating, the radio will clip it.

Now, I haven't had these issues with other Moto radios (ie CDM/HT, etc). Just the astros as they have tighter tolerances.

-Josh
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