Aces High Bulletin Board

General Forums => The O' Club => Topic started by: RAIDER14 on December 04, 2006, 12:17:37 AM

Title: How do Scanners work
Post by: RAIDER14 on December 04, 2006, 12:17:37 AM

anyone know how to make a PRO-94 1000-Channel Dual-Trunking Scanner work?

Scanner (http://www.radioshack.com/product/index.jsp?productId=2102471&cp=&origkw=scanner&kw=scanner&parentPage=search)
 :confused:

Title: How do Scanners work
Post by: rpm on December 04, 2006, 01:33:41 AM

Google is your friend.
http://www.radioreference.com/wiki/index.php/Pro-94

Title: How do Scanners work
Post by: DiabloTX on December 04, 2006, 01:43:13 AM

PWN3D

Title: How do Scanners work
Post by: lukster on December 04, 2006, 09:27:59 AM

Turn it on and it works. Modifications to allow monitoring of cell phones could get you a vacation in the slammer.

Title: How do Scanners work
Post by: 68ROX on December 04, 2006, 12:53:48 PM

Quote

Originally posted by lukster
Turn it on and it works. Modifications to allow monitoring of cell phones could get you a vacation in the slammer.

Scanners/radios manufactured before the law was enacted (very early 90's ?) are not illegal.

Technically, LISTENING to cellular phone calls is not purely illegal.  Divuldging the contents of those calls to third parties, or recording the conversations is.

While most ship-to-shore phone calls have gone digitally satallite, some of the smaller cruise lines still use the old ship-to-shore networks (radio).  Monitoring those calls is not illegal, provided they are not recorded without consent or the contents divuldged to third parties.

That said, it's not easy to find a receiver anymore that was purchased/modified BEFORE the law was enacted...folks tend to hang on to those rigs.  (Kinda-sorta except Ebay, which unfortunately, is loaded with illegal rigs.)

Trunking Networks, which many police departments went to in the late 80's and early 90's (875-925 mHz area) was done in an effort (similar to spread spectrum) to help give law enforcement more comminications options, and set aside one or more of their assigned frequences for data (ASCII, AMTOR, etc.) A monitor might hear one part of the conversation on one frequency, but by the time the squelch dropped, they might miss the other party on a different trunking frequency...or just hear encripted data.

Trunking was intended to allow "full duplex" (you can talk to someone at the same time they talk to you, not available on old fashioned in/out repeaters) and to go to a higher UHF spectrum--lessing the number of "dead zones" in any given coverage area (VHF).

The sideline advantage was making it harder for crooks to monitor law enforcement.


ROX


ROX
**PigStompers**

Title: How do Scanners work
Post by: 68ROX on December 04, 2006, 01:32:56 PM

Oh...

P.S.  THE MOST overlooked elements of a good monitoring station are a GREAT antenna (as HIGH in the clear--AWAY--from powerlines and other metallic objects as possible) and the feedline (coax).

If you spent good money for a nice receiver...definitely do not skimp on the antenna.

Good DX'ing!

ROX