GMCforum: GMCnet » Trailer brake controller

Home » Public Forums » GMCnet » Trailer brake controller (Towing)

Show: Today's Messages :: Polls :: Message Navigator

Re: Trailer brake controller [message #351539 is a reply to message #351478]

Thu, 23 January 2020 11:54

RF_Burns

Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada

Karma:

Senior Member

Hi Johnny
Our licensed 900Mhz stuff was in the 930-950Mhz so it was away from the unlicensed 902-920Mhz band. When the city installed wireless electric meters, they were given a licensed channel 30khz away from our 200Khz channel carrying fractional T1. They utility had to conduct tests with us for interference, but that was with just a handful for meters. Within a year it was 10's of thousands of meters... no need to say the link reliability went way down... and that was the main link to the Dispatch centre. We have now moved that system to 4.9Ghz Public Safety Band.

Small city transit department complained they could no communicate to their buses beyond about 3 blocks. We first thought it was the no-ground plane antennas for the fiberglass roofs... turned out to be the electronics in the new buses caused 40+db of desense at VHF. Eventually put them on our trunked DMR UHF system.

Its getting worse everyday!

GMC content, used the coach for a mobile office during the 4.9Gig upgrade Smile

Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that

Report message to a moderator

[Message index]

		Trailer brake controller By: thigh19 on Mon, 20 January 2020 21:18
		Re: Trailer brake controller By: RF_Burns on Mon, 20 January 2020 21:42
		Re: Trailer brake controller By: Tom Lins on Mon, 20 January 2020 22:50
		Re: Trailer brake controller By: jhbridges on Tue, 21 January 2020 08:39
		Re: Trailer brake controller By: RF_Burns on Tue, 21 January 2020 15:52
		Re: Trailer brake controller By: Carl S. on Tue, 21 January 2020 11:43
		Re: Trailer brake controller By: RF_Burns on Tue, 21 January 2020 16:13
		Re: [GMCnet] Trailer brake controller By: James Hupy on Tue, 21 January 2020 16:33
		Re: Trailer brake controller By: JohnL455 on Wed, 22 January 2020 08:46
		Re: Trailer brake controller By: jhbridges on Thu, 23 January 2020 09:44
		Re: Trailer brake controller By: RF_Burns on Thu, 23 January 2020 11:54
		Re: Trailer brake controller By: jhbridges on Thu, 23 January 2020 12:26

Previous Topic:	Batteries on both sides in the engine compartment?
Next Topic:	Transmission Tmp gauge - should I ? where?

Goto Forum:

-=] Back to Top [=-

Current Time: Wed Jun 26 00:19:58 CDT 2024

Total time taken to generate the page: 0.01035 seconds