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looking for someone who can do a P25 Alignment
Posted: Mon Sep 13, 2010 7:35 pm
by kt2728
can anybody put me in contact with someone who can do a proper alignment on an astro spectra for P25 operation?
kt
Re: looking for someone who can do a P25 Alignment
Posted: Tue Sep 14, 2010 6:04 am
by Tom in D.C.
It would help some if you stated where you're located.
Re: looking for someone who can do a P25 Alignment
Posted: Tue Sep 14, 2010 11:59 am
by Will
Tom in D.C. wrote:It would help some if you stated where you're located.
Tom. KT2728 is in Oklahoma...
KT2728,
How is the radio's modulation on analog channels? The P25 modulation should follow the analog modulation and is not separately adjustable.
Re: looking for someone who can do a P25 Alignment
Posted: Tue Sep 14, 2010 2:59 pm
by kt2728
Tom, i am in SW oklahoma.
Will, as far as i can tell the analog modulation is fine i can tx and rx with no issues. i do not have a service monitor of any kind.
Re: looking for someone who can do a P25 Alignment
Posted: Tue Sep 14, 2010 3:00 pm
by escomm
Anyone with a monitor should be able to do it, all the tuning is done in analog mode. 2.83KHz deviation is the magical number for compensation
Re: looking for someone who can do a P25 Alignment
Posted: Tue Sep 14, 2010 4:21 pm
by Will
If you go into the test mode and transmit, the tone should be clear and not distorted, the 'release' swak ( P25 turnoff) should be clear digital sound on a receiver.
If not, I will be glad to align it to factory specifications.
I have seen many come thru here with the alignment values WAY off. The analog TX may sound OK but the P25 is distorted.
Re: looking for someone who can do a P25 Alignment
Posted: Fri Sep 17, 2010 9:53 am
by motorola_otaku
escomm wrote:Anyone with a monitor should be able to do it, all the tuning is done in analog mode. 2.83KHz deviation is the magical number for compensation
+1
Any instrument capable of accurately measuring FM deviation and frequency down to 1 Hz can be used to align Astro Spectras (and Sabers too.) You don't even need an external audio generator; everything's generated in the radio for you.