• Effective immediately we will be deleting, without notice, any negative threads or posts that deal with the use of encryption and streaming of scanner audio.

    We've noticed a huge increase in rants and negative posts that revolve around agencies going to encryption due to the broadcasting of scanner audio on the internet. It's now worn out and continues to be the same recycled rants. These rants hijack the threads and derail the conversation. They no longer have a place anywhere on this forum other than in the designated threads in the Rants forum in the Tavern.

    If you violate these guidelines your post will be deleted without notice and an infraction will be issued. We are not against discussion of this issue. You just need to do it in the right place. For example:
    https://forums.radioreference.com/rants/224104-official-thread-live-audio-feeds-scanners-wait-encryption.html

396 and Intermod

Status
Not open for further replies.

ronmicha

Member
Joined
Dec 19, 2002
Messages
131
Location
memphis, tn
I’m getting what I have always heard referred to as “intermod”, an interference from something that is locking up my Uniden 396T. I’m using it around my computer so I suspect that may be the problem. I have a wireless keyboard, a Netgear router, and a Roadrunner Motorola modem, all in the same area. The frequencies involved are all VHF-Hi. No problems on 800mhz. I’m using the standard antenna that came with the radio. Any ideas from anyone on how I can continue to use my radio where I am, near the computer.
Thanks.
Ron
 

ka3jjz

Wiki Admin Emeritus
Joined
Jul 22, 2002
Messages
21,896
Location
Bowie, Md.
Your suspicions are correct. All that wireless stuff you have is rich in RF, and likely sending out harmonics all over the place. They're not really noted for spectral purity (welcome to the world of consumer RF). No doubt the poor 396 is overloaded with receiving one or more of those units.

An external antenna with good shielded coax will help, as will choking off any cables that can act as antennas for the RF (I think RS still sells kits for this - I know MFJ does...). I suspect though that you will not be able to get rid of it all - you will probably still have some RF problems there. 73s Mike
 

yaesumofo

Member
Joined
Jan 4, 2003
Messages
314
Location
los Angeles
The closest I get to this is when I am in my car the GSM phone will cause the radio to stop scanning and I hrea little sort of data buzzes. Yurn off the phone and it gors away. Another source if this can be nextel phones.
Yaesumofo


ronmicha said:
I’m getting what I have always heard referred to as “intermod”, an interference from something that is locking up my Uniden 396T. I’m using it around my computer so I suspect that may be the problem. I have a wireless keyboard, a Netgear router, and a Roadrunner Motorola modem, all in the same area. The frequencies involved are all VHF-Hi. No problems on 800mhz. I’m using the standard antenna that came with the radio. Any ideas from anyone on how I can continue to use my radio where I am, near the computer.
Thanks.
Ron
 
Status
Not open for further replies.
Top