This system is no longer supported!
Continued
use may result in communication failure or potential injury, and will
interfere with other systems using the former mobile TX frequency.
|
|
|
Charley
Mobile TX:
458.3750
Narrow!
114.8 CTCSS
Mobile RX:
453.3750
Narrow!
114.8 CTCSS
|
El Dara
UHF Repeater & VHF gateway cross-connect
|
Fully
Operational 24/7.
Cross connected with ALPHA
Note: upon one hour notice, the CHARLEY
can be converted to 4TAC41 operation with gateway connection to ALPHA,
BRAVO or LAW.
|
|
|
|
JPS/Raytheon
SNV-12 Voting System
CPM-3
Software Version:
1.5 updated 5/2010
|
Default
Console Transmit Site:
|
El Dara
|
|
Console TX
Site following mobile TX:
|
Voted Site
for mobile.
|
Return to
Default El Dara Console TX following mobile transmit time:
|
30 Seconds
|
Revote
Criteria
|
>3db
improvement sustained for >0.700 seconds, all A/B/L receivers
|
Alpha
Transmit Steering Lock
|
PSAP
remote or El Dara manual override
|
Bravo
Transmit Steering Lock
|
El Dara
manual override or JPS remote command
|
Law
Transmit Steering Lock
|
PSAP
remote or El Dara manual override
|
Mobile TX
PTT to Vote & Dispatch Audio RX Time
|
<0.125
seconds
|
Receive
link fail timeout
|
15 seconds
|
|
|
Carlson
TB-LL Microwave Systems
|
ELDR//PSAP 8CH
097o, 4.38Mi. 4.9Ghz, 60, 5-43-V Operational
|
|
ELDR//GRGS 4CH
053o, 10.73Mi.
|
4.9Ghz, 50, 8-103-V
Occasional Interference
|
ELDR//PRDG 4CH
164o, 14.25Mi.
|
4.9Ghz, 80, 3-38-V
Operational
|
ELDR//LAMO 8CH
218o, 14.94Mi.
|
4.9Ghz, 70, 2-51-V
Operational
|
LAMO//HULL 4CH
156o, 19.74Mi.
|
4.9Ghz, 50, C-101-V
Very Occasional Interference
|
ELDR//BAYL 4CH
351o, 7.92Mi.
|
4.9Ghz, 80,7-200-H
Operational
|
|
|
System Notices
|
|
|
|
|
ADVISORY NOTICE
HULL SITE ISSUES
|
Various microwave interference issues cause occasional outages of
the HULL ALPHA/BRAVO/LAW system. These issues are transient and are being
investigated.
The Pea
Ridge, El Dara and Baylis sites will provide redundant coverage during any
outage.
PAGING
IS UNAFFECTED BY THIS ISSUE!
|
|
WARNING
NOTICE:
HIGH POWERED MOBILE RADIO FAILURES
[Permanent]
|
Alpha,
Bravo and Law are designed to operate properly region-wide using
low-powered portable radios. Using a high powered mobile to communicate
short distances WILL FAIL due to the excessive RF radiation from the
high-powered mobile overloading nearby receivers to the point they cannot
hear tower repeaters.
Also, automatic
repeater selection is based on mobile transmitter signal quality as
received by the system; use of high powered mobiles may cause the system to
vote to a distant transmitter rendering local communication difficult.
Raytheon/JPS is presently modifying their voting firmware to improve this
situation.
Users are advised to
use mobile ERP's of less than 25 watts whenever possible. In this case more
isn't better, it is absolutely much worse and may fail entirely.
|
|
ADVISORY NOTICE
12/20/2010
PEARL SITE NOW ONLINE
[RESOLVED]
|
The Pearl receive site is on-line as of 12/2010. No user
intervention is required; the system will simply work better from the South
Eastern parts of the region.
Users may
find that locations that previously voted to the El Dara site (or didn't
work at all) now vote to the Pleasant Hill site.
Final
adjustments will take a few weeks of actual use to iron out, and the system
may mis-vote from some locations. Users are cautioned as always to simply
use correct (and patient) radio procedures. Please document any problems
with mis-voting and forward them in written form to the ETSB for
resolution.
PAGING
IS UNAFFECTED BY THE NEW SITE!
|
|
Policy,
Use of LAW Roam
[Permanent]
|
Per the
Pike County Sheriff: Transmitting on LAW is restricted to Commissioned
Peace Officers, Fire Chiefs, or from authorized Emergency and
Government-owned Vehicles. The ability to transit on LAW Roam shall be
disabled in all other radios, including portables and mobiles belonging to
Non-Commissioned First Responders. Contact Sheriff Petty for authorization.
|
|
ALL POINTS BULLETIN:
3/01/2010
[Permanent]
|
(De-program the former 155.910 114.8 Mobile Tx Protocol; the 154.785 114.8
base transmit protocol is unchanged.)
This 155.910 mobile transmit frequency has been DISCONTINUED.
The former mobile TX
frequency is being assigned to other uses- mobile users attempting to
communicate on LAW by transmitting on 155.910
Continued use will also cause problems in other unrelated systems.
Local and visiting
agencies wishing to use the LAW channel MUST use the 'new' (March 2008)
mobile transmit roaming protocols of 159.1800 20K0F3E 123.0 CTCSS.
|
|
ADVISORY
NOTICE:
5/2010
[Permanent]
|
Users and
our own investigation have shown local cable TV providers to be leaking TV
audio from their 'closed' cable distribution system, This locally affects
frequencies between 155.6 and 155.8MHz. Use of the appropriate receive
CTCSS codes will reduce the nuisance audio but not eliminate the harmful RF
interference from leaking Cable TV systems.
The
Pittsfield system is known to interfere with Adams Sheriff on 155.740 and
V-CALL (aka 1CAL10) on 155.7525 by leaking TV-Ch20, QVC. The 127.3 CTCSS
should be applied to Adams Sheriff. The national standard for V-Call is CS
receive and 156.7 CTCSS TX. Providing all transmitters are properly
programmed with the 156.7 TX CTCSS, adding the same CTCSS to the RX
frequency will remove the nuisance interference, but users should be
cautioned that some vendors fail to program their transmitters with the
NPSTC required 156.7 CTCSS, so open monitoring may be required.
|
|
NOTICE:
8/1/2009
[Permanent]
|
Numerous
radios supplied by vendors other than B-K Electric have been found with
incorrect programming on Alpha/Bravo/Law Transmit. These three channels DO
NOT use the same CTCSS tone for TX and Rx. Alpha/Bravo are narrow-band
11K2F3E channels and will not perform properly in 20K0F3E wide band mode.
Please advise your vendor to download the latest TECHNICAL STANDARDS (link)
information and verify that their products are
programmed as required.
|
|
|
