Showing posts with label baby monitor 1.9ghz dect. Show all posts
Showing posts with label baby monitor 1.9ghz dect. Show all posts

Sunday, January 13, 2013

Anyone have any Phone frequiencies for programmable Scanners ??

Q.

A. it is illeagal to listen to or record a telephone conversation that you are not part of...

with that said.. there are 25 channels for the 1st gen cordless phones, but not many people use them any longer, they are around 40-50 mhz....

900 mhz phones operate around 900 to aprox 925 mhz... there are many brands, with variations to the channeling of the phones.... so you will have to scan that area...

most "newer" 900 mhz phones have DSS so you will not hear anything but a scrambled digital signal (which you can not unscramble)

2.4ghz, 5.8 ghz phones operate outside the range which most radio scanners operate, but are also digital and encrypted, so even if you could recieve the signal, you wouldnt be able to do anything about it...

your scanner may be able to scan the 1.9ghz range for DECT phones, but again they will be digital, and scrambled...

baby monitors are another thing that you can scan for... people forget they are on sometimes...

most people arent talking about anything intresting on the phone anyhow.. it can be boring to listen to someone elses conversation...

phonelosers.org has a list of intresting scanner frequencies..

EDIT:
cell phones arent able to be picked up.. the old anolouge phones were in the 800 mhz range, but all scanners sold today have the cellular range blocked out..

many people would love to scan the nextel walkie talkies, but they also are unscannable... at least for now...


what does this mean. ten points?
Q. Transmission Band1.9 GHz? what does that mean when it comes to phones for examplez
American Telecom 1.9 GHz and is $36.00 a good price for this type of phone. im trying to buy a house phone that is cheap that is why im asking.

A. 1.9Ghz is the RF that the handset and base communicate with each other.. that is the frequency that DECT phones operate on... it will provide better range compared to 2.4 and 5.8Ghz phones..

with radio waves the LOWER the frequency the FURTHER the range...

also, since DECT/1.9Ghz has been set aside for cordless communications there is no other consumer wireless devices in this frequency range such as in the 2.4Ghz range, where there is wifi, wireless video cameras, baby monitors, microwave ovens and other devices...


Is there a good landline phone, with LOUD volume & LOUD speakerphone, that works with Hearing Aids?
Q. I've heard there are telephones out there for the hearing impaired but what I am looking for is a land line telephone for my parents who wear hearing aids but refuse to wear them when using the phone. Both say they get ringing and feedback when using a cordless phone while wearing hearing aids, but when they remove them the volume of the phone isn't sufficient.

So...I am looking for a land line base phone, with speaker phone, and better than average volume and sound clarity. If possible, the phone system would come with one or more cordless phones, also with exceptional volume and sound clarity. Oh, I should also mention that they, and I, are very limited financially so can't spend a lot on this.

If a phone with these features doesn't exist, is there some sort of device that can be attached to the phone to increase volume and sound clarity?

Somewhat related, can anyone define a few things for me:

What is the difference between a 5.8 GHz, DEC 6.0, 9 GHz, and some other numbers and acronyms I can't recall atm.

Thank you for your help!

Kay

A. there are plenty of hearing aid compatible telephones http://www2.panasonic.com/webapp/wcs/stores/servlet/PNAEndecaSearchCmd?N=779832047&No=0&Nr=12001&Ns=&Ntk=MainSearch&URL=vShopSearch&cmTag=true&catalogId=13401&storeId=15001&Ntt=hearing+aid+compatible&cm_sp=SiteSearch-_-MainSearch-_-Consumer

DECT - Digital Enhanced Cordless Telecommunications these phones operate in the 1.9Ghz frequency range - an unlicensed spectrum that the FCC has set aside strictly for cordless telephones.. this is the latest and greatest in cordless phone technology...

5.8Ghz operates in this unlicensed spectrum, there are some other consumer wireless devices that operate in this spectrum, but it is one of the least crowded frequencies - however since it is the highest frequency cordless phone on the market, it also has the least range from handset to base (some 5.8 cordless phones also operate on the 2.4 Ghz spectrum)

2.4 Ghz operates on this unlicenced spectrum with many other consumer wireless devices such as WiFi routers, microwave ovens, wireless video cameras, etc...

900 Mhz phones operate on a crowded unlicensed frequency with many other consumer wireless devices, such as baby monitors, wireless speakers, garage door openers, car alarms, etc... also unless the phone has DSS then it is insecure and can be monitored by a radio scanner... (DECT, 2.4 and 5.8Ghz phones all have some form of DSS, or FHSS)

DSS - Digital Spread Spectrum - a form of encryption to prevent eavesdropping...

FHSS - Frequency Hopping Spread Spectrum - a form of encryption that also continuously searches for the best channel, and keeps changing to the best channel between the handset and base (normally these phones will not have a channel button, because the phone is constantly changing channels on its own)





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Thursday, December 6, 2012

What is the difference between 5.8 gighrtz and 6.0 gighrtz?

Q. What is the difference between a phone that has 5.8 giga hertz and 6.0 giga hertz?

A. I think that you are asking in relation to cordless phones... In which case, there are NO 6.0Ghz cordless phones... there is however DECT 6.0 phones, which operate in the 1.9Ghz range...

When it comes to radio frequencies, the lower the frequency, the further the range, as long as all other factors remain the same. 900Mhz phones would in theory have the best range, however, they operate at lower transmitting power then other cordless phones.

From best (range, battery life, etc) to worse:

DECT 1.9Ghz - best range, least interference, unlicensed radio spectrum dedicated strictly for cordless telephones.

2.4 Ghz - next best range, however this unlicensed radio spectrum is crowded with wifi, wireless video cameras, and various other wireless consumer devices, and therefore subject to increased interference.

5.8Ghz - unlicensed radio spectrum, not as crowded as 2.4Ghz but also may contain other consumer electronics. range is limited compared to 2.4Ghz and DECT phones.

900Mhz - no security, can be listened in on any radio scanner ("police scanner") unless equipped with DSS. least range of all currently available cordless phones. Many consumer electronics such as baby monitors, and wireless intercom and doorbell systems, and garage door openers operate within this frequency range.

1st Gen cordless phones (aprox 48Mhz) - poorest range, no security, can be listened in on with a radio scanner, also shares unlicensed frequencies with baby monitors. Limited frequencies. No longer commercially available, however some (very few) of these phones are still in use.


do wireless landlines pick up yours or your neighbors phone conversation?
Q. i dont have unlimted minutes on my cell phone.my parents believe that if you have a wireless your neighbors could listen to the conversation know i cant talk on the phone while on the computer or go to my room im going to show my parents the anwsers please help convince them that a wireless land line is better

A. the first cordless phones operated around 48Mhz as well as baby monitors and the like...and were easy for people to listen in on your conversations.. it was not uncommon for a baby monitor to pick up your conversation, or for 2 cordless phones to hear each other....

the 900 Mhz phones solved some of those problems... but people with radio scanners (police scanners) could still listen in on your calls...

DSS technology stopped that... and many newer 900 Mhz phones come with DSS...

also most 2.4Ghz phones have DSS or FHSS, aside from that, most radio scanner equiptment only goes up to 1.3Ghz - however these phones may interfere with WiFi

5.8Ghz phones also normally come with DSS or FHSS... and again are outside the range of most radio scanners.... however, because they are a higher frequency the range is less...

DECT phones operate within the 1.9Ghz range, are immune to interference from other devices, and provide the best range, clarity, and security...

so the only way that a neighbor can listen in to your conversation with a cordless phone that you purchace today would be if you bought a 900Mhz phone that did not have DSS....


Long range cordless home phone?
Q. I used to have a 900mhz phone that had a range of several hundred feet. Now that it has dies though I have not been able to find another system that works any where near as well as my old one. I have tried two systems that work on 5.8ghz from Uniden and Pansonic but both have horrible range. I am considering tiring the new DECT 1.9ghz phones but i am not sure that will work any better for me. Whatever I get needs to be able to be purchased and possibly returned locally in the Charolote North Carolina area.
In particular any recommendations for specific phones?

A. In general, you can expect better clarity as you move from 46-49 MHz models (which are overcrowded with baby monitors and walkie-talkies) to 900 MHz models (which most homes use for cordless phones) to 2.4 GHz models. The primary benefit of 5.8 GHz models is the avoidance of interference with 802.11b wLANs and microwaves. If interference is your primary concern, make sure you purchase a fully 5.8 GHz phone.2 Otherwise, a dual transmission phone will give you better battery life.

As for range, here are some average maximum distances for the different technologies. Keep in mind that these numbers are very subjective and depend on factors such as obstructions, frequency interference, transmission technology, and even weather. The higher figure listed assumes ideal conditions are present.

46-49 MHz - 40 to 250 feet
900 MHz - 75 to 400 feet
900 MHz w/spread spectrum - 200 to 1500 feet
2.4 GHz w/spread spectrum - 300 to 2000 feet
5.8 GHz w/spread spectrum - 300 to 2000 feet

In addition to their other advantages, the 2.4 GHz and 5.8 GHz frequency bands are above the range that most scanners can intercept, making it much more difficult for eavesdroppers to listen to your conversations.


Does anyone know the frequincies of At&t cordless phones?
Q.

A. not understanding why you need the frequencies for...

the 1st gen cordless phones had 25 channels, around 40-50 mhz... not many of these phones are in use any longer, but the actual channels are listed many places online....

900mhz phones operate on a much larger range of channels in the 900 mhz range, with the handset and base usually using 2 diffrent frequencies, they are mostly between 900mhz, and 925mhz....

DSS was introduced several years after many insecure 900 mhz phones were already in use, and many people still have 900 mhz phones with out DSS (i have seen radio shack still selling these phones for about $20 less than a year ago) DSS encrypts the signal into a digital signal, and changes channels constantly, to reduce or eliminate possible eavesdropping.

2.4 ghz I am uncertain as to how many frequencies that these phones use, but 2.4 ghz = 2400 mhz so they are within that range... along with wifi networks, and while you are unable to change the channel your phone operates on, if there is interfearance between the phone and wifi network, you can change the channel that the wifi operates on, with the routers control pannel accessed by putting 192.168.1.1 into your web browser and entering the router user name and password *usuallay admin / password*

5.8 ghz phones operate within 5800mhz . and like 900 mhz DSS phones, and 2.4 ghz phones they are digital, and change channels automaticllay to the clearest channel, to my knowledge there is no consumer product that is capable of reciving 2400mhz or 5800mhz and listening in to these conversations.... \

DECT phones operate within 1.9ghz or 1900mhz....

as the lower the frequency the further the range, and longer battery life you will recieve, the best phones that are sold today are the 900 mhz phones, however, for security, the best phone to purchave, with the 2nd to best range is the DECT 1.9 ghz phone.. also the DECT phone will not get interfearance with your wifi network...


unsure what you need this info for.. but FYI if you plan on using a radio scanner to pick up phone conversations...
1- it is illegal to listen in on or record a phone conversation to which you are not a part of...
2- if number 1 didnt scare you... most people now have 2.4 or 5.8 cordless phones, which make it very difficult to find something to listen to (but then again, there are those baby monitors...)
3- most phone conversations are just not worth listening to any how... most conversations between people are boring..





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