Your browser is not Java capable or Java has been disabled.


Radio AH7E Hawaii celebrates its 8th year on the web! Officially launched on 3 January 2000, Radio AH7E Hawaii specializes in the monitoring of public safety radio communications and more. We are proud to serve the scanner and amateur radio community in the Aloha State!

Whats New or Upcoming:
Emergency preparedness: A personal responsibility
Visiting Hawaii? We'll put together some information just for our visitors
Site updates with new banners, pictures, and layout - so stay tuned!

Main Page
Amateur Radio
Emergency Preparedness
Visiting Hawaii
About Me
Subscribe to

Powered by

News Archives

800 MHz rebanding
As Brian Kitaoka, WH6ET, pointed out in a recent post on the Radio-Monitoring-Hawaii YahooGroup, Hawaii is part of "Wave 1" along with states in the west, central, and eastern U.S. to undergo a process called rebanding (a.k.a. reconfiguration). The current 800 MHz bandplan was setup for public safety and Specialized Mobile Radio (SMRs) to share the entire 800 MHz bandwith from 851-865 MHz; 866-868 MHz was reserved specifically for public safety agencies.

The sharing of radio frequencies and the explosion of license grants in the 800 MHz band has caused numerous interference problems especially towards public safety communications. Rebanding will result in a contiguous block of frequencies reserved just for public safety and a separate contiguous block reserved for SMR/ESMR (conventional/trunked business radio systems). The plan is for public safety occupy all of 851-854 MHz; public safety, business industrial users and low-power business radio systems will share 854-860 MHz; all other ESMR systems will occupy frequencies in the 861-869 MHz range.

The change was supposed to have happend in 2006, but everything has fallen way behind. Expect changes to occur in 2008.

Trunking scanners with EDACS and LTR capability will not be affected by rebanding. Frequencies will be relocated to the public safety portion of the rebanded 800 MHz band, and will have to be reprogrammed in logical channel number (LCN) order by the user.

However, Motorola trunking systems (using the legacy Smartnet 3600 baud control channel), that use some or all frequencies in the 866-869 MHz range will cause problems for all older analog-only scanners after the systems are rebanded because of the changes Motorola will make to the trunking channel plan that is hard coded into Radio Shack and Uniden scanners. The radios will not scan to the correct channel when the system assigns a call to a channel that was previously on a frequency between 866-869 MHz and was retuned to a new rebanded frequency 15 MHz lower between 851-854 MHz.

The Motorola trunking plan for these frequencies will change because the frequencies are moving 15 MHz down, and, because channels in the 866-869 MHz are set on 12.5 kHz centers, whereas pre-rebanding channels in the 851-854 MHz range are on 25 kHz centers. The number of frequencies between 851-854 MHz will effectively be doubled.

The newer APCO 25 digital-capable Radio Shack Pro-96 and Pro-2096 should not be affected by rebanding because the trunking channel plan can be edited using software, but we will not know until a scanner is actually tested on a rebanded system.

New dispatch tones for HFD
As one part of HFD's long-term strategic plan, new digital dispatch tones were implemented for HFD this past week. In addition to this change, a new dispatch announcement is in place that announces the company first before the incident type.

The dispatch tone format is the same with the Station ID followed by a 1-2 DTMF sequence and then the dispatch announcement. The reset tone is a 3-5 second tone followed by the same reset DTMF sequence used in the old system.

"Control" is now known as "Fire Dispatch".

Oahu welcomes 19th EMS unit
The Waipio EMS unit came online on Sunday, 6 January 2008. The unit is quartered at the Kaiser Permanente - Waipio clinic from 0700-2300 daily. Officials will determine whether the service will need to be extended to 24 hours.

Honolulu International Airport to switch to Airports Division P25 digital radio system
Plans are underway to shift all federal and state agencies at the Honolulu International Airport from the current analog system to the Airports Division P25 digital radio system. When complete, the new digital radio system will have a single site with seven (7) channels. If someone can locate the FCC license, we will be able to determine the frequencies for this system. It is likely that the talkgroup identifiers will change.

University of Hawaii at Manoa
In preparation for 800 MHz rebanding, the security frequency for the University of Hawaii at Manoa (formerly 852.0625 MHz) has changed. If someone can located the FCC license, we will be able to determine the frequency for this system. Also, the Signal Stalker feature on some scanners can be used to determine what frequency is in use at UH-Manoa.

Outrigger Hotels LTR System
Currently trying to figure out the logical channel number order for the Outrigger Hotels LTR radio system. This is giving me a little bit of a headache, as one FCC license covers multiple repeater sites. As of right now, I can confirm two sites, at two differnet hotels, but the hardest part is to connect related communications together.

The two systems that I found are programmed into different banks. This is to prevent the scanner from trunking incorrectly.
(2) 464.2125 (3) 464.9375
(2) 464.2375 (3) 464.8625

After listening a little more, looks like the correct order is:
(2) 464.2125 (3) 464.8625 -- Security with the same callsigns and voices were heard on these two frequencies.
(2) 464.2375 (3) 464.9375 -- Possible LCN 1

Copyright 2000-2009
Webguy: David J. Cabatu, AH7E
Updated: 01.27.2008 at 9:33 p.m.