155.040 Madera County
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lbfd09
Member
I just hear someone report a TC in Fresno 180 at 41 and instantly heard the Fresno City FD get the dispatch. tone used was 110.x (I am bad on some details). When closing the report the dispatcher some EMS call type references. Also sounded like a repeater output.
BTW - Madera, Fresno and South regioalized EMS - might be a cross-band interface?
I also heard some traffic with the DPl of 411 - but sounded more LE than EMS related.
Surprising what 30 feet does to reception.
BTW - Madera, Fresno and South regioalized EMS - might be a cross-band interface?
I also heard some traffic with the DPl of 411 - but sounded more LE than EMS related.
Surprising what 30 feet does to reception.
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smokeybehr
Member
It sounds like intermod between a couple of radios in the same building.
GrumpyGuard
Member
Did an FCC search and it comes back to Merced County for public safety. It is also licensed to the state of California.
lbfd09
Member
I believe the use in Merced Co is for ops at the Castle Air Park (old Castle AFB). I also see that Amador Co has used it for "Emer Services."
I can confirm that it was used within Fresno County sounding like it was some kind of EMC user. I am also seeing a LE type of traffic using DPl of 411.
lbfd09
Member
Thanks to a dispatch with fire only moments ago, I can confirm that this is simucasting EMS dispatches such as those on Med 9 and 10. I cannot determain as of yet just which channel this feed is from as there is none that is claiming this type of traffic on both Madera and Fresno Counties.
I also am not see any FCC license for this frequency, it maybe a contidional test for which I am unable to find. These test are seen here with increasing frequency over that past year.
I also am not see any FCC license for this frequency, it maybe a contidional test for which I am unable to find. These test are seen here with increasing frequency over that past year.
fuzzhead
Member
155.04 really 155.0325?
Is it possible you are listening to 155.0325 ? Maybe you are tuning up a little and hearing Sanger Fire FB2 which retransmits lots of area fire and EMS dispatches due to contract dispatching.
Is it possible you are listening to 155.0325 ? Maybe you are tuning up a little and hearing Sanger Fire FB2 which retransmits lots of area fire and EMS dispatches due to contract dispatching.
lbfd09
Member
That is possible. I will program this into my radio. I am some 35 to 45 miles away on the west side of Merced county. I see the TPl on other Snger listing in the data-base is the same as the transmissions in question.
Fuzzhead, you seem familiar with Sanger's frequencies. Can you submit the unlisted frequencies to the data base?
I also have an inquirer to someone who knows most all the frequencies from programing various units in the area. I anticipate hearing form him laster today or early tomorrow.
lbfd09
Member
I quickly ruled out the Sanger FD repeater. This repeater is very active and does not have the any of their traffic on the 155.040 entry. This .0325 frequency is not narrow banded yet.
fuzzhead
Member
It's 155.0325...I'm telling ya!
Dont rule out the Sanger repeater. It is high level on Bear mountain. It is NOT low level in the City of Sanger.
Sanger FD contracts with Fresno EMS dispatch. This repeater will retransmit EMS dispatch Med 14 from Madera also. Just the dispatcher not the units. You will seldom hear Sanger FD because they are a small city but they are active.
Just for grins I monitored your 155.04. All the transmissions heard were really on 155.0325. I
measured with a service monitor for correct frequency.
If you want further info the callsign is WQBC931. 155.0325 R ,150.805 Input PL 103.5
73
Dont rule out the Sanger repeater. It is high level on Bear mountain. It is NOT low level in the City of Sanger.
Sanger FD contracts with Fresno EMS dispatch. This repeater will retransmit EMS dispatch Med 14 from Madera also. Just the dispatcher not the units. You will seldom hear Sanger FD because they are a small city but they are active.
Just for grins I monitored your 155.04. All the transmissions heard were really on 155.0325. I
measured with a service monitor for correct frequency.
If you want further info the callsign is WQBC931. 155.0325 R ,150.805 Input PL 103.5
73
lbfd09
Member
I have the Sanger FD repeater programed in, and it is heard very easily. I am hearing Fresno EMS dispatches on the Sanger box. Sanger's audio is not heard on the 155.040 frequency, yet up to this weekend the Madera med dispatches are. Maybe someone toggled off this transmitter? I will keep listening.
lbfd09
Member
I have still this programed with pl (100.0 Tpl) and danged if it didn't all of a sudden start back up spouting out Madera Co calls. Sounds almost like the same format as on Sanger's frequency but still not heard there. Audio seems a bit softer as it this might be an image? RF on the sMeter is consistent form being from that area.
The mystery returns.....
The mystery returns.....
It is listed as one of 7 statewide channels on DOJ's mobile license, which means it (and the other 6 channels) could be used anywhere in the state that another agency is not actively using the channel.
emt 531 -
Can you monitor the channel with 2 different brands of scanners? (2 different intermediate freqs (IFs) in the scanners should rule out intermod or sideband traffic)
Can you log specific messages with times? Maybe somnone else will hear the same traffic in other areas on other freqs. Or maybe someone can ID specifically which agency's traffic you are hearing.
Is there a common agency that is mentioned or dispatched in all of the calls?
Does the traffic just appear on certain days, or certain times of certain days?
Can you monitor the channel with 2 different brands of scanners? (2 different intermediate freqs (IFs) in the scanners should rule out intermod or sideband traffic)
Can you log specific messages with times? Maybe somnone else will hear the same traffic in other areas on other freqs. Or maybe someone can ID specifically which agency's traffic you are hearing.
Is there a common agency that is mentioned or dispatched in all of the calls?
Does the traffic just appear on certain days, or certain times of certain days?
lbfd09
Member
I am not emt531, but I do play one at my local fire house. I am also getting these on the west side (152 and I5), but a a greatly reduced audio level compared to all other frequencies. This is why I am suspecting it to be "an image." Excellent training by the area EMS groups has allc the EMS dispatches sound very much alike and I have never been able to detect or hear the originating identifier.
It use sees to run in spurts as if it might be an overflow or backup channel. I have tried cycling through the other known channels and have not caught the same dispatch.
All the dispatches heard seem to be within Madera County and all seem to include notification to Mariposa for fire co-response. ("Med xx and Mariposa, repond to...") But not all of fire's co-notifications have been through this frequency.
Using the RS Pro-197 on an old Antenna Specialist MON-50 serries nmo to ground plane on a 30+ foot mast. That puts be too far for it to be a intermod or similar issue - but does not rule out a receiver caused condition. RF signal level is about a 4 (out of 5) and typical from that area.
I have also asked a person in the loop (a firefighter who's also a radio tech) as to this and there were also clueless.
lbfd09
Member
UPDATE - -
This VHF channel seems to be a rebroadcast of 451.425000 listed in the data base for Madera Co EMS.
This VHF channel seems to be a rebroadcast of 451.425000 listed in the data base for Madera Co EMS.
lbfd09
Member
This appears to be something that someone is turning off and on. Been off for the last 2 weeks or so.
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