Help id 462.88750 and 467.88750 in San Mateo County region

[Ranch]

462.88750
467.88750


These 2 mystery frequencies are listed in the San Mateo County region. When set on FM Analog they sometimes come as buzzing screeching sounds anytime there is activity. Activity is sparse. They can be picked up from the SF Bay Area all the way to the city of Santa Clara.

If anyone is in San Mateo County/Santa Clara area and familiar with them, are these 2 encrypted PD channels (maybe one is an input and the other a repeater?) or are they part of some hidden unknown Analog-Digital Trunking System yet to be discovered?

If they are a single encrypted channel (both input and repeater) then I'm guessing maybe it's a Detective-Inspector channel of sorts.

462.88750 2003-04-03 15 0 MO 11K0F1D IG
467.88750 2003-04-03 15 0 MO 11K0F1D IG

 

[Mick]

Could it be this San Mateo County licensee that is heard:
WPLZ712
FOSTER, CITY OF
610 FORSTER CITY BLVD
FOSTER CITY, CA 94404
ATTN KEN WHITNEY PARKS & RECREATION DEPT
Eligibility:
90.35A1 - APPLICANT IS CITY GOVERNMENT PARKS DEPT. RADIOS WILL BE USED TO COORDINATE IRRIGATION AND WATER PROJECTS FOR CITY PARKS AREA.
462.8875
467.8875
Emission Designators: 11K0F1D

 

[Ranch]

ADIOS WILL BE USED TO COORDINATE IRRIGATION AND WATER PROJECTS FOR CITY PARKS AREA.
462.8875
467.8875
Emission Designators: 11K0F1D

That's a surprise I was expecting something interesting with a high level of action!

When set in FM mode I haven't been able to hear any conventional traffic on those two. Only screeches and buzzing so I thought perhaps that is encryption.

Don't know how or what mode to program these two in order to hear any audible speech and verify. Thank you

 

[WayneH]

What you're hearing is telemetry for controlling and monitoring irrigation equipment. You won't hear any voice traffic at all. It's a dedicated freq for data transmission.

-Wayne

 

[Ranch]

What you're hearing is telemetry for controlling and monitoring irrigation equipment. You won't hear any voice traffic at all. It's a dedicated freq for data transmission.

-Wayne

Thank you for remembering the post and clearing it up.

There is an unidentified Detective channel for that distant city. Not knowing if it is on a different trunked system or not, thought I was close in discovering the channel.