Uniden 5.8 GHz Digital cordless w 3 handsets interference background noise no matter where we are in the house or which handset we use

If you're requesting the manual, I believe you can find it here:
http://www.manualslib.com/manual/334463/Uniden-Tru9565-2.html
Uniden TRU9565 2 User Manual

If you still have a regular phone about, plug it inhere the base handset is connected and see if the symptoms remain. If they do, the problem is likely with your house wiring or the phone company. If no interference on the regular set, base handset may be defective. Try it at someone else's house.

Radio Shack (hurry :) has in-line filters that may clear up line noise.

All he best

From your handset, you just have to press the mute button, your phone should start telling you the time, date, ect. press the #5 key and then the #8 key and start recording your message. When finished press the # 8 key again. Hope this helps

At 20 ft line of sight, you should have perfect reception with most any cordless phone.

The fuzzy signal can indicate:
1.
A weak signal between base and handset.
20 ft line of sight should have a good strong signal.
Your handset may be defective.
Or, your handset battery may be weak.
Your base unit may be defective.

2.
You may be experiencing RFI Interference.
Is the base unit next to any other electronic devices?
If it is next to a wireless router or some other wireless device, it may be overloaded by the nearby signal (even if on a different frequency)

I've got a 5 year old Panasonic 5.8 Ghz cordless phone connected to my VoIP box. I just tested it from about 25 ft away from the base unit in another room with a wall in between and my reception is perfect.

I did the same test with my Panasonic DECT 6.0 phones (1.9 GHz). The first handset is slightly fuzzy, but otherwise good signal. The 2nd handset was perfectly quiet with good strong signal. So, there is a difference between two identical handsets connected to the same base unit. This indicates to me that one handset is better tuned than the other. Nothing I can do about that but get a new 2nd extension cordless handset. Sometimes, it's just luck of the draw

Your 5.8 system utilizes analog transmissions at 5.8 GHz between the base and handset. The DECT is digital at 1.9 GHz. Sorry, but the two systems are totally incompatible.
BillB

A common problem is background noise if you did any of these silly things:
1. Keep handsets away from microwave ovens, computers, remote control toys, wireless microphones, alarm systems, intercoms, room monitors, flurscent lights, or electrical appliances.
2, You have to move to a different location of your house & I bet ya it decreases the background noise.
3. Remember its a cordless phone and needs clear signal to and from answering machine because thats what is connect to the phone jack.
4. Try switching phone jacks.
5. I had similar problem but it was will all phones and found the telephone repair guy had crossed a neighbor's newly installed line with my line at the terminal by the street. Boy was I fuming mad.

SOUNDS TO BE A PROBLEM WITH THE EARPIECE ON THE HANDSET WHICH MEANS THE HANDSET NEEDS TO BE REPLACED.

The DXI4286-2 is an Analog phone, it does not allow for both handset to be used at the same time. You can transfer a call from one handset to another, but cannot talk on both at the same time.
The following is from the user's manual for your phone:

Unavailable message is displayed
on the LCD screen of the
handset.
• Make sure the other handset is not already in use. Both handsets cannot be in talk mode at the
same time.
• Place the handset in the main base for at least 5 seconds to re-register to the main base.
• Make sure the handset is not too far from the main base when trying to use.

You might want to try one of the DECT or a Digital 2.4 or 5.8 GHz phones, they allow you to use multiple handsets at the same time.

Registering Handsets to the Base
Whichever handset you choose to charge in the base is automatically
registered to the base. Any additional handsets must also be registered to
the base before you can use them.
Be sure both handsets are fully charged.
One at a time, place each handset in the base. The charge/in use LED on
the base begins to flash, indicating the base is registering the handset.
Wait for at least five seconds, then pick up the handset and press
[talk/flash]. If the display shows TALK, the handset is registered. If not,
place the handset in the base to try again.
Press [end] and continue with the next handset.
Note:
Once both handsets are registered, it doesn’t matter which
handset is placed in the base or the charger.
When you charge the handsets, Caller
ID summary screen and the name of
the handset appears.

This can be find from uniden website.
http://www.uniden.com/pdf/DXAI4588-2om.pdf

1. How old are you phone lines in the house?  Check the "main" terminal connections.  Clean and reconnect.  (Make note how the wires are connected).

2. The power transformers for the phones maybe you trouble also. Unplug all except the main unit.   Check each transfer one at a time. Do you have static?  One or more may be your problem.  Replace the bad ones if needed.