RF ?

[thephonelady]

I have read all of the threads regarding FR interference from AM station and my customer has a Partner in a large building very close to an AM transmitter but there are only 2 phones that are affected by the RF and it is so loud that when they are on the phone it sounds like there are people in their office carrying on a conversation. The 2 offices are next to each other. Weird huh??

 

[kwing112000]

I have seen this before and there are filters you can buy. does it happen on ext to ext calls or only external calls?

Kevin Wing
ACSS Small and Medium Enterprise (SME) Communications
ACS- Implement IP Office
ACA- Implement IP Office
Carousel Industries

 

[exsmogger]

When I worked for Ma Bell we would put 100mf capacitors across the tip & ring to filter out radio interference.

Brian Cox
Oregon Phone

http://www.OregonPhone.com

http://www.linkedin.com/in/briancox1952

 

[Telecomboy]

I had one that when the phone was next to a window it picked up the signal, as soon as it was moved away from the window it was fine. The client ended up moving their desk so that the phone was out of the path of the window.

 

[thephonelady]

Kevin-It happens on all calls but only on 2 phones.
Telecomboy- Offices are not near windows but they are next to each other with a storage closet in between

 

[Telecomboy]

One other thing I've noticed is that the new Euro II are far more sensitive than the Euro I's. You may want to try seeing if a Euro I still picks up the signal.

 

[Westi]

it might have to do with the length of the cable acting as an antenna, with the right wavelength it works quite well.
Try the 100mF capacitor like Brian suggested or try running a new cable and test then but making sure you run a slightly different path so that the lenght is different.
Should all of that not proof effective then a shielded cable with grounding on both ends (important) should help.

Joe W.

FHandw, ACSS

 

[SYQUEST]

The fun part is figuring out where the RFI is entering the set. It could be the station wire, line cord, handset cord, base, or jack. In addition to the above you might try a longer or shorter line or handset cord, or even moving the set to another side of the desk. Unfortunately, the handsets used on the Partner phones can't be opened to put a capacitor across the receiver unit, like we could do on the G or some K handsets. Don't forget to try one of the ferrite core filters that are usually used on the power cords of the ACS processor modules. They can be tried on the line cord. This is usually a process of elimination.

....JIM....

 

[BTBZ]

I have used an DSL filter at ext and solved the problem you have..
Good luck