New Dover TWP. Radio System?
- Thread starter Joseph11
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Their current system is fairly new. Maybe its a new MDT upgrade.
What did this antenna look like?
What did this antenna look like?
Anyone know what's happening to Lakewood PD ch. 1? I heard a general announcement @ 12:30 today that at 1 pm, they are to no longer use that channel and the use only ch. 2 until further notice. Maybe a flash upgrade to support ENC full time??? Any intel. is greatly appreciated.
Joseph,
Did you know that you can usually tell the frequencies an antenna is used for based on its length and design? A 12" antenna with a pig tail is most likely used for frequencies between 800-900 MHz. It can be for both data (MDT) or voice.
By the way I don't know if you looked at these two websites, but if you've got the time you can check Maxrad.com in the mobile antenna section and antenex.com too.
Did you know that you can usually tell the frequencies an antenna is used for based on its length and design? A 12" antenna with a pig tail is most likely used for frequencies between 800-900 MHz. It can be for both data (MDT) or voice.
By the way I don't know if you looked at these two websites, but if you've got the time you can check Maxrad.com in the mobile antenna section and antenex.com too.
I want to make a slight correction to what I said earlier. The location of the pigtail or coil is important. A coil that's at the bottom of the antenna and is about 1 inch in diameter is a good indicator it's a low band or VHF antenna. A coil that's half way up the antenna indicates it's in the upper UHF band (e.g. 800MHz).
Its probably the center loaded UHF antenna for their newer UHF system. I noticed them on the cars about a year ago while I was down that way.
Hi guys,
"Thank you. I can't imagine what Dover TWP. would be doing with an 800-900 MHz antenna, though."
Don't you know that cell phones operate in that frequency range? From the description it's just that sort of antenna. Commercial and public service system antennas aren't that flimsy, very rugged naturally so exposed helical delay lines are out.
"Thank you. I can't imagine what Dover TWP. would be doing with an 800-900 MHz antenna, though."
Don't you know that cell phones operate in that frequency range? From the description it's just that sort of antenna. Commercial and public service system antennas aren't that flimsy, very rugged naturally so exposed helical delay lines are out.
hulka
Member
Did you guys ever think that the 800 MHz antenna maybe for the MDC's?????????
DJ88
Member
My notes show Dover Twp. MDT frequency as 460.550. They may have upgraded it to an 800 MHz frequency. The only other one I have is for Howell Twp., which is 800 MHz.
hulka
Member
OK, that was turned into the OEM Frequecy. Look at the Data Base. It is listed in there. The 800 MHz are for the MDC's. MDT is stone age. Now called Mobile Data Computer.
hulka
Member
Just and FYI also, I also heard from a reliable source that Police-2 is full time secure now.
Hi guys,
Mobile data terminal/computer, what's the difference besides another politically correct phrase? Like the computer you're using to read this message it's a terminal, part of a remote computer system. The correct term is "dumb terminal" actually since all it needs is a rudimentary OS like the old DOS mirror.fil and a rudamentary terminal program (there were and are many) to operate. You new guys weren't born yet so you and your whiz-bang Pentium and XP machines may be excused.
Ever since the FCC mandated encryption for all transmissions of a sensitive nature law enforcement has been switching to secure radio systems, the FBI was the first. We used to monitor them on the 167mHz sub-band until the infamous "Tomcat" you probably have heard of published government frequency lists, within a few monts they were encrypted and within a year went to a satellite system. The local cop shops followed suit and by now very few still transmit in the clear. I have found other interests long ago, they're boring as hell so stop complaining (;->) and find other uses for your scanners.
BTW, the real challenge is on HF and it's worldwide so expanding your interests just may be in order. Oh, some of us hams say that real radios glow in the dark. Here's a picture of my first communications receiver, a National NC-173.
Mobile data terminal/computer, what's the difference besides another politically correct phrase? Like the computer you're using to read this message it's a terminal, part of a remote computer system. The correct term is "dumb terminal" actually since all it needs is a rudimentary OS like the old DOS mirror.fil and a rudamentary terminal program (there were and are many) to operate. You new guys weren't born yet so you and your whiz-bang Pentium and XP machines may be excused.
Ever since the FCC mandated encryption for all transmissions of a sensitive nature law enforcement has been switching to secure radio systems, the FBI was the first. We used to monitor them on the 167mHz sub-band until the infamous "Tomcat" you probably have heard of published government frequency lists, within a few monts they were encrypted and within a year went to a satellite system. The local cop shops followed suit and by now very few still transmit in the clear. I have found other interests long ago, they're boring as hell so stop complaining (;->) and find other uses for your scanners.
BTW, the real challenge is on HF and it's worldwide so expanding your interests just may be in order. Oh, some of us hams say that real radios glow in the dark. Here's a picture of my first communications receiver, a National NC-173.
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