XTS 3000 audio question

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Radiogeek97
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XTS 3000 audio question

Post by Radiogeek97 »

Guys

I have an xts3000 uhf Mod III the problem i am getting is that somtimes on transmitting what is heard from it is a crackling static sound plus the normal audio over it. I am using a nmn6193b speaker mic which seems to compound the problem. Oftem what dispatch says is "that you sound like you are in a wind tunnel". Now i am cautious to not speak too close to the mic but it often seems like the speacer mic is overly sensitive especially if i am moving while talking. (this really makes it sound like SH#t)
i am not sure if it is an audio gain problem because somtimes i can hit the ptt and just hear the crackling sound over my scanner without even speaking.
i am tempted not to use the speaker mic at all but somtimes it is conveinent especially if I have an individual stopped and i want to try and keep my hands as free as possible. If somthing happens and i have to drop the radio and fight or grab for a weapon or oc ect. then you have no radio. Atleast if you have the radio on your hip and you are using a speaker mic and somthing happens you can use your hands pretty quick without loosing communications.
I have tryied several speacer mic(s) and they all seem to have the same problem, is there anything i can try setting wise to improve the chacteristics of the radio when using a speacer mic?

THANKS V. MUCH
RocketNJ
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Post by RocketNJ »

I think there is a psb for an insulator that goes above the shield.

George
Radiogeek97
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Post by Radiogeek97 »

SHAUN

no i use the full size antenna, our system sucks enough that i need all the help i can get reception-wise.
Radiogeek97
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Post by Radiogeek97 »

Rocket

Not working for an MSS any more is there a way to find out about the possible existance of the PSB you mensioned?


Guys

1 more thing i didnt mension before , i have the audio gain for analog secure and astro set to AGC 0 & 0. Sombody here suggested those settings in an earlier post of mine.
RocketNJ
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Post by RocketNJ »

The insulator part number is 14-85328E01 and the SRN number with the info is SRN1397. If it is a legit radio you can bring it to an MSS and get the insulator installed for free (refer to the SRN).

This only affects the UHF XTS3000's.

George
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ExKa|iBuR
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Post by ExKa|iBuR »

I get that problem with my Jedi alot. It seems to come and go, and isn't really obtrusive that much, so I tend not to worry about it.

What I did do was put the RF shield that comes with an 800MHz Jedi into the UHF radio and it seemed to go away, so maybe your problem is RF leaking into the radio somewhere.

-M
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Radiogeek97
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Post by Radiogeek97 »

SHAUN,ROCKET, EXCAL


THANKS for the info. As far as the radio goes it is legit (as far as i can tell) before i bought it i put the mod/ser thru our local database and NCIC and it cam back clean. The flash is only for ID display & astro digital (no whored out flash) But that being said if I can get the part I would rather do it myself. If any of you have access to the SRN info could you post it here that would be great, even if i dont do the repair myself I could get my freind at the MSS to fix it. Thanks again



Happy easter (to those who celebrate it )
Radiogeek97
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Post by Radiogeek97 »

FELLAS


I think i have narrowed down the source of my static to my speaker mic. I can test my radio on direct with my scanner, what i find is that with the speaker mic installed about 40% of the time i get that grackling static noise. I have tryied different mic's and different ways of holding the mic and different ways of speaking into it and even not speaking into it and just pushing the PTT i still get that noticable noise. Now with the speaker mic on or off if i use the internal radio mic the transmissions are fine. Could i have 2 bad mics or are there any settings in the radio i can adjust. Have any of you ran into this type of problem?
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radioracer
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Post by radioracer »

It is possible especially if the other mic has been used alot also. The cords go bad alot. Try a known good mic with it. If you can get your hands on the insulator it is easy to install, BUT the insulator isnt the problem alot of tiimes. It was an easy fix for Motorola to put out for static problems. Does it seem to happen while you are sitting or putting pressure on the front housing? Try pressing on the housing without the mic attached while transmitting and see if hear a popping or alot of static. Along with insulator you can try bending the bottom right corner of the rf bd shield also look along the bottom edge of the shield it should be flat if not you can take that little point off it can cause a grounding problem and noise. There are two spots on the casting that you can file down also by the two posts where the vocoder bd goes they should make a nice 90 degree angle with no exsess that can cause noise also.
Radiogeek97
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Post by Radiogeek97 »

Before i went off to work today I hooked up my scanner to the pc to record or comms while i was at work today. After listening to it there is a definite static problem (intermittent) when using the speaker mic. I tryied pushing on the front housing and it does seem to create the same type of noise! When i disconect the speaker mic and just use the radio by itself it works fine. It also works fine if the mic is attached and i use the radio (internal) mic. The weird thing is that if i take the same speaker Mic(s) and put them on my ht1000 and listen to the ht on direct i do not hear the popping or static nearly as bad. I am wondering if it could be a flex problem on the xts??? Or it really does need that rf sheild that "M" reccomends in that SRN. I took the radio apart and did not find anything loose or out of the ordinary.
Does anybody have a diagram or info as far as what the sheild looks like and where it goes.


thanks
RocketNJ
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Post by RocketNJ »

it is NOT a shield. It is an insulator that sits on top of the shiled over the RF board (between the RF board and the front case flex).

George
Radiogeek97
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Post by Radiogeek97 »

George


Thanks for the correction of my error, by yor description of the insulator, i cant imagine that it is too hard to install. It seems like it will be some kind of "sandwich" materyal that somhow attaches whan you remove the front cover. I took it appart yesterday, and other than that foolish 1-peice gasket that was a pain to re-install all went well. Thanks for the description.
RocketNJ
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Post by RocketNJ »

It is very easy t install. As I remember it is molded to fit the contour of the shield.

George
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radioracer
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Post by radioracer »

The insulator is molded. It fits on the rf board shield inbetween the shield and the control board. It is very, very thin molded plastic. If that doesnt work you might have a bad flex in the housing and the side connector is causing the problem.
Good Luck!
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