BC780XLT Question

[kb9hgi]

I bought a BC 780 XLT for 25.00 I put some freqs in and it works but seem like some of my local channels are overloading the front I can kinda hear them on other freqs I have programmed in. Are these scanners known for this? I turned on the Attenuation but it was still doing it.

 

[ka3jjz]

It used to be that the 780 had a pretty good front end - are you using an amp? Take it out of line and see what happens. It shouldn't overload that badly, but then again, we're talking about a very old scanner with a front end that probably isn't up to snuff anymore...

Mike

 

[gewecke]

I bought a BC 780 XLT for 25.00 I put some freqs in and it works but seem like some of my local channels are overloading the front I can kinda hear them on other freqs I have programmed in. Are these scanners known for this? I turned on the Attenuation but it was still doing it.

Actually, no. 780xlt's are usually known for being fairly immune to intermod...unless you have a strong transmitter close by like I do.
Have you checked the towers in your area to see what might be overloading the front end?
I have a NWS transmitter within line of sight of my antennas, so my 780 usually has a indoor antenna on it.
Some people claim some success by putting a trap inline with the antenna.

73,
n9zas

 

[KF4JYE]

This was a common issue for channels with the band-type set to "Auto" on the BC780XLT.
There were many posts about this issue on other forums 10 years ago.

Try setting the band-type to "NFM" for all channels using the VHF-H (150) and UHF (450-460) bands.
I still use my 780, and it works fine with these settings.

 

[nick1427d]

If you're getting adjacent channels coming through then setting the mode to NFM should help. If not it's probably something nearby as was said earlier. I was having horrible trouble with traffic coming over other frequencies and just set those to NFM which fixed the issue. Note this was on VHF High.

I'm using a 780 btw

 

[quarterwave]

I'll just ditto.

I run 2 - 780Xlt's....fine radios. I have almost everything set to NFM now...although I never did have much trouble with it.

I do have one time when it drives me nuts....I go to work about 7:45 and drive past a auto assy plant...and they have 5-6 VHF repeaters for Maint, Security, Production, Materials, Admin, and Telecom....and then they have a VHF paging base....I drive within 1000ft of where the transmitters are on the roof 2-3 floors high....and they run 100 watts on everything....about 75 more than they need....and WOW....when all of that is going...my 780 goes nuts....I don't even monitor thier stuff, but it will make it stop on about 20 other VHF freqs.

No idea how the ended up on VHF....they need UHF in that place. They NEED a trunked TRBO system.