InterceptRadio.com Forums

...So all the internet user reports of identified talkgroups on the California statewide Pacific Gas and Electric MPT1327 system are erroneous?

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President-in-Exile, Seattle Area Radio Communications And Scanner Traffic Intercept Crew (SARCASTIC)
Don't feel bad if you can't use your STD100/200; there are still people using Digital Frequency Search!
Bunnery definition for the under-fives

The system went very quiet after 7pm.... here's a snippet of a voice hit...

I suppose the ORG is the RadioID and the TAR is the TGID?

Perhaps Sean may know... this is first real active time with a working MPT1327 system. :beer:

You've seen more of it than I have

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I generate Board Warnings

FYI the TGIDs may be useful in understanding their channel layout but not useful for our scanners. We just have to locate the voice channels and scan them...

Hearing 217.0675 control channel weak in Moses Lake.

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Interoperability is an attitude, not a technology.

Isn't that one fron Ryegrass?

_________________
President-in-Exile, Seattle Area Radio Communications And Scanner Traffic Intercept Crew (SARCASTIC)
Don't feel bad if you can't use your STD100/200; there are still people using Digital Frequency Search!
Bunnery definition for the under-fives

A lot of active voice today due to the new wind storm.

New Voice Frequencies heard:

217.58125
217.71875
217.89375

I do not understand what really is going on but... This is what seems to work so far... The key somehow is the PL tone and they just remap the same freq range. Unitrunker will take the split bandplan. Trunkview will only take a few custom channels that are used on each site. Multi sites can come active for the same traffic. Are the inputs up 2 Mhz?

Unitrunker
110.9 217.505 .0125 lo 41 - Hi 80 Sys 5239
146.2 217.505 .0125 lo 141 - Hi 180 Sys 5239
110.9 217.505 .0125 lo 200 - Hi 239 Sys 50B9


Trunkview
110.9 216.9925 .0125 041-240
146.2 215.7425 .0125 141-199
110.9 215.0050 .0125 200-239


[Custom channels]
041=217.50500
042=217.51750
043=217.53000
044=217.54250
045=217.55500
046=217.56750
047=217.58000
048=217.59250
049=217.60500
050=217.61750
051=217.63000
052=217.64250
053=217.65500
054=217.66750
055=217.68000
056=217.69250
057=217.70500
058=217.71750
059=217.73000
060=217.74250
061=217.75500
062=217.76750
063=217.78000
064=217.79250
065=217.80500
066=217.81750
067=217.83000
068=217.84250
069=217.85500
070=217.86750
071=217.88000
072=217.89250
073=217.90500
074=217.91750
075=217.93000
076=217.94250
077=217.95500
078=217.96750
079=217.98000
080=217.99250
141=217.50500
142=217.51750
143=217.53000
144=217.54250
145=217.55500
146=217.56750
147=217.58000
148=217.59250
149=217.60500
150=217.61750
151=217.63000
152=217.64250
153=217.65500
154=217.66750
155=217.68000
156=217.69250
157=217.70500
158=217.71750
159=217.73000
160=217.74250
161=217.75500
162=217.76750
163=217.78000
164=217.79250
165=217.80500
166=217.81750
167=217.83000
168=217.84250
169=217.85500
170=217.86750
171=217.88000
172=217.89250
173=217.90500
174=217.91750
175=217.93000
176=217.94250
177=217.95500
178=217.96750
179=217.98000
180=217.99250
200=217.50500
201=217.51750
202=217.53000
203=217.54250
204=217.55500
205=217.56750
206=217.58000
207=217.59250
208=217.60500
209=217.61750
210=217.63000
211=217.64250
212=217.65500
213=217.66750
214=217.68000
215=217.69250
216=217.70500
217=217.71750
218=217.73000
219=217.74250
220=217.75500
221=217.76750
222=217.78000
223=217.79250
224=217.80500
225=217.81750
226=217.83000
227=217.84250
228=217.85500
229=217.86750
230=217.88000
231=217.89250
232=217.90500
233=217.91750
234=217.93000
235=217.94250
236=217.95500
237=217.96750
238=217.98000
239=217.99250

I don't think there is any "input/output" frequency. I think they transmit on simplex but I could be wrong.

Here's what is shown elsewhere... I haven't confirmed this yet. I get a headache when playing with Trunkview. :shock:

Channels 0XX use a Base of 217.0000
Channels 1XX use a Base of 215.7500
Both use Step of 12.5

Elsewhere is seldom correct. This is just what I can see. They don't need to know.

I'll give your band plan a shot. I tried using the logic from Trunkview to determine the sites and it worked to a point. Clearly they are using a split band plan.

I got a close call hit today of electric guys on 217.5400 (110.9).

ETA-This was not .5425 and the signal was quite strong. No license for this freq anywhere in the FCC DB other than a canceled Exxon license.

They're using 6.25khz steps... so it was probably 217.54375

The 110.9 ctcss is PSE.

BTW, companies don't have to license individual frequencies in this band. They can just be licensed for the range and be valid. It's a part of this new AMTS band in 217-218 and 219-220 Mhz.

Also, was not simplex. Dead carrier between transmissions.

MPT is different, but not so different to use Simplex (at least when controlled by a trunking controller)

This is a trunking system, like the others we are accustomed to. It uses repeater(s) (1 each) per channel (voice / control)

Obviously Simplex freqs can be programmed into subscriber units.