HT 1250 scanning problem w/audio

emmy412 · Post by **emmy412** » Thu Nov 22, 2001 11:00 am

I have one question regarding priority channel as it relates to scanning and audio quality.

It seems that when I have the HT1250 on scan (with a priority ch set), the scanned channels don't come out of the speaker that well.

What I mean is that if a scanned channel receives a transmission, the transmission comes out fine for the first second (or so), then the audio quality or volume is reduced.

I have tried everything and don't seem to know how to fix this problem. The audio quality / volume is probably reduced because of the radio checking the priority channel, however, it doesn't seem right.

I checked with a local Motorola dealer and they took a look at my programming. They heard the problem I was talking about but couldn't find an option to remedy it. They thought that the volume might be reduced because it was one of the scanned channels, not the primary.

Can you shoot me an e-mail if you have a remedy for this....

Thanks

Chris Emerson
[email protected]

Post by **/\/\y 2 cents** » Thu Nov 22, 2001 11:55 am

you are going to want to go into the RSS and turn off the Audio Companding and Pre-emphasis'/De-emphasis and this should clear things up. One other thought would be to ditch the HT1250 because it is piece of crap(no offense) and get yourself a MT2000 A7 or a System Saber III.

emmy412 · Post by **emmy412** » Thu Nov 22, 2001 1:16 pm

I tried switching those selections and it didn't have any affect of the audio when scanning...

Chris emerson
[email protected]

Alan · Post by **Alan** » Thu Nov 22, 2001 1:43 pm

1) Never shut off pre-emphasis/de-emphasis. This will cause the rx audio to sound tinny.

2) Turn off low level expansion on a per channel basis.

If the issue is not a constant one, it is most likley a defective unit.
It has a 2 year warranty. Return to Motorola for service.

emmy412 · Post by **emmy412** » Thu Nov 22, 2001 2:41 pm

I disabled the "low-level expansion" with no affect on the scanning/audio situation.

I have two ht1250's and this situation is consistant on both. That's why I don't think it's defective.

It's annoying when trying to listen to a scanned station while having a "priority" channel set.

If I turn off the priority setting, the scanning/audio is fine.....

Chris
[email protected]

Tony Soprano · Post by **Tony Soprano** » Thu Nov 22, 2001 6:51 pm

There was an early SRN on this issue, you should send it to Motorola for the fix, it's probably under warranty. Programming settings do not affect this.

Tony

Post by **wavetar** » Fri Nov 23, 2001 4:36 am

Yeah, there's been about 101 firmware upgrades for those radios, get them flashed with the latest version & see what happens. As far as the audio settings, it depends on whether or not you're dealing with a customer who's using HT750/1250s exclusively, or has them mixed with other models. Amongst themselves, the factory settings of "Low Level Expansion" enabled & "Pre/De Emphasis" enabled sounds just fine. But, throw in a few HT1000s or HT600s, and the 750/1250s then sound muffled. In these cases, disabling the Low Level Expansion seems to clear that up, although it doesn't sound quite as good amongst the 750/1250s. I've never seen a case yet where I've had to disable the Pre/De Emphasis, disabling it makes the radios sound like crap no matter what other models you're dealing with.

Todd

Post by **/\/\y 2 cents** » Fri Nov 23, 2001 11:24 am

I had to disable pre/de emphasis when using HT1250's with EX500's. I know what you are saying, but this time it actually made it sound fuller and less muffled.....with it on, it actually sounded like it was digital, you knew they were talking, but couldn't make out what they were saying cause the words were mashed together.....almost like if you have ever heard charlie brown's teacher talking.

Post by **wavetar** » Sat Nov 24, 2001 4:12 am

Thanks for the tip, I haven't tried them with EX500/600s yet, I'll keep that in mind when I do.

Todd