Friday, December 14, 2012

How do I choose the best frequency for my cordless phone?

Q. What is the difference between the frequencies?

A. the best a safest you can get right now is the DECT6.0....

http://www.101phones.com/browse/18b145148f9d8fa63849b02bfc08698e/DECT_6.0_phones/?link=leftmenu

What's the difference between 900 MHz, 2.4 GHz and 5.8 GHz phones?

Your average cordless phone is actually a radio transmitter/receiver that operates across various radio frequencies. The three currently used frequencies are 900 MHz, 2.4 GHz and 5.8 GHz. As you step up in frequency, you'll experience an increase in the signal clarity and the range your phone can reach from its base station. However, the actual range and sound quality of your phone can be affected by obstructions within your home and interference from other electronic devices. Here are some general guidelines for choosing one of the three frequencies:
900 MHz

Most manufacturers have begun to phase out 900 MHz phones with AT&T having phased them out completely. Phones operating on this frequency are fine for household use and reasonably priced, though the features offered with these phones are limited.
2.4 GHz

The majority of phones on the market today operate on the 2.4 GHz frequency. This higher frequency provides better performance and sound quality than 900 MHz models. With more models to choose from, you'll also find more available features, including integrated speakerphones and support for multiple handsets. One thing to keep in mind is that other electronic gadgets, from baby monitors to wireless networking gear, increasingly use the 2.4 GHz band and may cause interference. If you use these items in your home, consider purchasing a 5.8 GHz phone.
5.8 GHz

5.8 GHz phones offer the latest in cordless telephone technology with the best clarity, range and possibly security. The biggest advantage to a 5.8 GHz phone is that its frequency band is less trafficked than the 2.4 GHz band, resulting in less interference. The chips that generate the 5.8 GHz signal are more expensive to manufacture, so expect to pay a bit more.
Analog versus digital

You can find both analog and digital models within all three of the main frequencies (900 MHz, 2.4 GHz and 5.8 GHz).
Analog

Analog technology applies to a system of recording or transmitting sound. In an analog system, the changing energy in the sound is converted to energy variations in another medium, for example, magnetism in a tape.

Analog cordless phones are the most affordable and available option. You will experience adequate range and good voice quality. Drawbacks include poor security (anyone with a radio scanner will be able to listen in) and static when you move too far away from the base station.
Digital

Digital technology is also system of recording or transmitting sound. In digital systems, the changing energy in the sound is continually measured.


How easy is it to tap someones phone?
Q. I have a friend who recently broke up with a boyfriend. He is still trying to contact her, but she tells me he seems to know unusual details of her private phone conversations and brings them up to her. How can I help her, and how would I help her find out if her phone was tapped?

A. very easy to tap a POTS (landline phone) or a VoIP phone that has been connected to your existing wiring, and the wire still goes outside of your home to the NID box...

VoIP is not easy, if not impossible to tap (illegally)
cellular is not easy if not impossible to tap..

feds can tap anything... but it usually requires connections from the telephone company office, not something the average person has access to...

if you have any 900Mhz cordless phones, throw them out.. replace your cordless phones with any technology that has DSS or FHSS (2.4,5.8, DECT)..... DECT is the best choice...

if there are any baby monitors, or wireless intercoms, or any other device that transmits sound wirelessly, remove them or turn them off..


What are the cons of running Wi-Fi in a home setting?
Q. I want to set my new lap top up to my wireless router. If I used Wi-Fi the signal would run through the kitchen. I've previously tried sending a signal to a desktop computer in the back of my home but it failed to receive it. What kind of distractions could I experience? Does the phone effect a signal? A friend told me my giant speakers also effect the signal? Is this true? What do I need to watch out for to have wireless signal in my house?

A. Wi-Fi is simply data being transmitted over the air in the same way that analogue TV or Radio is.

There are LOTS of things that will interfere with the signal - here are some of the more common ones at home:

Walls (Brick, plaster, most anything!)
Floors (as walls)
DECT telephones
Analogue wireless telephones
Baby monitors (not necessarily yours)
Overhead power cables
Water pipes
Microwave ovens
Televisions
Radios
CB radios
Walkie Talkies (kids often the culprit on these!)
Other wireless networks
HiFi speakers

and so on

There are lots of ways to measure the signal - but my preferred route at home is to use the Homeplug system - it always works and I have the version that is almost the same speed as my broadband - in fact it is my 100mb LAN card that is the bottle neck.

Homeplug sends the data over your existing AC (electrical) cabling and the units can be bought freely on line or eBay.

++++++++++

To answer Hunter's criticism below.

1. Research is key Hunter - here's a couple of links so you can go and buy the right gear

http://cgi.ebay.co.uk/SOLWISE-PL-85PE-85MBPS-HOMEPLUG-ETHERNET-ADAPTER-NEW_W0QQitemZ150148599955QQihZ005QQcategoryZ40995QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
(85Mbps)

http://cgi.ebay.co.uk/2-x-HomePlug-200Mbps-Very-Fast-Ethernet-Over-The-Mains_W0QQitemZ300138577955QQihZ020QQcategoryZ40995QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
(200Mbps which is the version I have)

2. Not knowing is not a problem - not checking makes us look silly.....


Is it better to select a specific channel instead of auto on my netgear router to reduce...?
Q. ...interference problems?
A few times w week family members experience the inability to connect to my wireless network. I am thinking it may be interference of some sort. Sometimes it lasts a the better part of a day. I already changed my cordless phone system to a DECT 6.0 which helped greatly, but it still happens sometimes. Will selecting a specific cahnnel help? If so, which one?

A. If you live in an apartment complex, while you might have changed out your 2.4GHz phones with DECT 6.0 phones (which actually operate at 1.9GHz, just in case you were curious; DECT6 is a standard number, not a frequency), your neighbors might not have changed out theirs. Thus, you could still be getting interference from such phones. Also, there are other devices that tend to work in that frequency range: wireless intercoms, baby monitors, etc. If you have any of these devices, make sure to check their manuals to see that they are not in the same frequency range.

Now, if you want my educated guess as to whether it will help to set a specific channel, while I say possibly since there is a chance that it will, I would say that the result will probably be no. The reason being that, while you may set your router not to hope around between the eleven available channels, the other devices that could be causing interference will still hop around and will occasionally end up on the same channel, thus continuing to cause the interference anyway.

Also, something else to be aware of, if you do set it to a specific channel, make sure that you aren't shooting yourself in the foot. Some routers require the ability to use certain channels to achieve maximum throughput. For example, to get the best connectivity on my D-Link DIR-625 Wireless-N router, I must use channel 6. Depending on which model of Netgear router you have, you could be in a similar situation. If you would send me a note saying what model of router you have, I could better advise you as to how best to set up your router.

I hope this helps! Let me know if you have any questions or need further assistance.





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Title Post: How do I choose the best frequency for my cordless phone?
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