482.03125 for Queens FDNY?

Status
Not open for further replies.

IFRIED91

Arrive alive
Premium Subscriber
Joined
Aug 3, 2020
Messages
556
Location
NYC area
Your Wideband is enabled… turn it to narrowband… it’s been a mandate for the commercial/public safety sector since 2013
 

GTR8000

NY/NJ Database Guy
Database Admin
Joined
Oct 4, 2007
Messages
16,343
Location
BEE00
Your Wideband is enabled… turn it to narrowband… it’s been a mandate for the commercial/public safety sector since 2013
Narrowbanding was only mandatory for 150-174 MHz and 421-470 MHz. T-Band was exempt from narrowbanding, and still is (although that may change soon). NYPD's T-Band frequencies are still wide, whereas the FDNY T-Band frequencies were narrow from the start.
 

AlexC

Member
Database Admin
Joined
Dec 19, 2002
Messages
270
Narrowbanding was only mandatory for 150-174 MHz and 421-470 MHz. T-Band was exempt from narrowbanding, and still is (although that may change soon). NYPD's T-Band frequencies are still wide, whereas the FDNY T-Band frequencies were narrow from the start.

I'm 99% sure you are wrong. Narrowbanding impacted T-Band and was a thing well before it was slated to go away with the T-Band Giveback. The deadline to convert to narrowband was after the t-band giveback passed. A number of licenses complained to the FCC about having to change and then be forced to change again so the commission suspended the requirement which is why you have a mis-mash of channels some are narrow and some are wide across T-band. Expect something coming down to clarify the FCC's stance on this - but basically with the giveback off the books I wouldn't be suprised if they give everyone 180 days to finish what they were supposed to do 10 years ago.
 

GTR8000

NY/NJ Database Guy
Database Admin
Joined
Oct 4, 2007
Messages
16,343
Location
BEE00
I'm 99% sure you are wrong. Narrowbanding impacted T-Band and was a thing well before it was slated to go away with the T-Band Giveback. The deadline to convert to narrowband was after the t-band giveback passed. A number of licenses complained to the FCC about having to change and then be forced to change again so the commission suspended the requirement which is why you have a mis-mash of channels some are narrow and some are wide across T-band. Expect something coming down to clarify the FCC's stance on this - but basically with the giveback off the books I wouldn't be suprised if they give everyone 180 days to finish what they were supposed to do 10 years ago.
I'm 99% sure that you misinterpreted what I was trying to get across. Yes, T-Band was originally included in the narrowbanding mandate, however shortly after the giveback legislation was passed, the FCC issued a blanket waiver exempting T-Band from the narrowband mandate, and that waiver remains in effect to this day. Believe me, I know the history of this whole saga all too well.
 

62Truck

Ordinary Subscriber
Joined
Aug 13, 2005
Messages
2,024
Location
Uranus
Also.. When FDNY migrated from VHF to UHF T-Band they narrowbanded, and the all the infrastructure and subscriber devices were new..
 

k2hz

Member
Database Admin
Joined
Feb 7, 2011
Messages
2,084
Location
Rochester, NY
For some reason, a front end of a Baofeng reminds me of...shall I say...diarrhea...
I also believe that selecting narrow band in a Baofeng only reduces the TX deviation and does nothing for receive selectivity which is crap anyway.
The same is true of many scanners where selecting narrow band boosts the audio to compensate for the reduced deviation but does nothing for the IF selectivity. Professional radios and better scanners do switch the IF filters.
 

ansky

Member
Joined
Dec 27, 2005
Messages
1,263
Location
NJ
I also believe that selecting narrow band in a Baofeng only reduces the TX deviation and does nothing for receive selectivity which is crap anyway.
The same is true of many scanners where selecting narrow band boosts the audio to compensate for the reduced deviation but does nothing for the IF selectivity. Professional radios and better scanners do switch the IF filters.

I have tried all of the various filter settings on the SDS200 but unfortunately it did not result in any improvement in reception of FDNY.
 

k2hz

Member
Database Admin
Joined
Feb 7, 2011
Messages
2,084
Location
Rochester, NY
I have tried all of the various filter settings on the SDS200 but unfortunately it did not result in any improvement in reception of FDNY.
The "filters" in the SDS100/200 are all just software settings, not actual filters. The many issues with the SDS100/200 are well known. That is why I found it necessary to use BCD436/536HP for everything except P25 Phase II simulcast.
 

KevinC

Encryption
Super Moderator
Joined
Jan 7, 2001
Messages
13,356
Location
I'm everywhere Focker!
The "filters" in the SDS100/200 are all just software settings, not actual filters. The many issues with the SDS100/200 are well known. That is why I found it necessary to use BCD436/536HP for everything except P25 Phase II simulcast.

A little off-topic, but oh well...Others will disagree, but my SDS-series scanners are about useless on UHF. Filters, IF exchange, attenuator have no affect. I'm in a semi RF rich environment and it just wreaks havoc on these radios. 7/800 simulcast on the other hand is pretty darn good,
 

k2hz

Member
Database Admin
Joined
Feb 7, 2011
Messages
2,084
Location
Rochester, NY
A little off-topic, but oh well...Others will disagree, but my SDS-series scanners are about useless on UHF. Filters, IF exchange, attenuator have no affect. I'm in a semi RF rich environment and it just wreaks havoc on these radios. 7/800 simulcast on the other hand is pretty darn good,
That matches my experience exactly. My SDS100 does a great job on the local P25 700/800 simulcast system but, in a high RF environment, the desense issues from strong in-band VHF and UHF signals make it useless at times. Tweaking the "filter" settings will mitigate some issues for particular frequencies but overall it is useless with many signals that are fine on a 436 sitting right next to it. There are even issues on 800 simulcast attempting to receive an adjacent county when the local 800 system is busy.
 

ansky

Member
Joined
Dec 27, 2005
Messages
1,263
Location
NJ
The "filters" in the SDS100/200 are all just software settings, not actual filters. The many issues with the SDS100/200 are well known. That is why I found it necessary to use BCD436/536HP for everything except P25 Phase II simulcast.

I agree. Although even with other scanners such as the HP-2 and BCT-8, FDNY UHF still sounds horrible.
 
Status
Not open for further replies.
Top