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Author Topic: long distance cordless phones  (Read 677 times)
TIKICARVER
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Posts: 6




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« on: December 28, 2004, 12:25:01 AM »

I know what your thinking, what do cordless phones have to do with ham radio.
Well my father-in-law lives in Russia and he just bought a Long Distance Cordless Phone. He gave me some of the specs and I realized it is working on the ham bands. The specs: the base is 5 watts on 146-147 Mhz and the handset is 1 watt on 229-230. The company claims it has a range of up to 40 km (25mi).
 I find this a little hard to believe. I'm new to ham, so maybe I'm wrong, but can someone give me an estimate of what the range of this system would be.
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KC0KBH
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Posts: 176


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« Reply #1 on: December 28, 2004, 11:34:07 AM »

You need a license for it.
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N3ZKP
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Posts: 2008




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« Reply #2 on: December 28, 2004, 12:17:28 PM »

<< You need a license for it. >>

No you don't!

It is not a legal system to operate in the US and any kind of license won't make it so!

It may well be legal in Russia and the question was about range. To answer that question, if the base unit has an external (to the house) antenna and the terrain is relatively flat, 25 miles is conceivable. More likely is 10 to 15 miles.

If there is no external base unit antenna, the range is probably going to be five miles or less.

Lon
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WA4MJF
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Posts: 1003




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« Reply #3 on: December 30, 2004, 09:18:41 AM »

In fact, the FCC "dinged" a fellow using
one of those not long ago.


73 de Ronnie
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TIKICARVER
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Posts: 6




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« Reply #4 on: December 30, 2004, 03:04:17 PM »

Thanks for the info.
FYI: You do NOT need a license in Russia for these phones.  They are available in the stores, (but most people can't afford them). I did some searching on the web, there are many models of these type phones available. Most made in Korea and some cheap copies from China.
  My father-in-law is in the process of putting an antenna on the roof of the house. That should give him a strong signal. He works for the local water company and wanted something that would work anywhere in town. (no cell phones there). He was also hoping it would work in the local mountains. I think with the roof antenna he will have no problem in town, but I'm sceptical of it working in the mountains. But he said he can see the town from the places he goes hunting, so maybe it will work.  The guy he bought it from said he got a call in his car when he was 7 miles away and the base station was on a 1st floor balcony.
  I will report back when I hear from him about the range he gets.

FYI: this phone only cost $100
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WB6BYU
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Posts: 13174




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« Reply #5 on: January 03, 2005, 02:16:06 PM »

And in Russia this phone is NOT operating in the ham bands!

Their 2m band is only 144 - 146, and they have no ham
allocation at 220 MHz.

The problem is when such phones are used in the US
where these frequencies are more populated.

If he has line-of-sight coverage from the local mountains,
it may work for him.  The biggest problem is likely to
be the available power and antenna for the hand-held
receiver: he may be better off adding a quarter wave
whip for the hand-held transmit frequency, which should
still receive OK.
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TIKICARVER
Member

Posts: 6




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« Reply #6 on: January 23, 2005, 12:24:38 AM »

Well I just got a report from my father-in-law.
The phone works better than expected. He had a friend drive to a near by city which is 60 miles away.
The phone had a clear signal both directions at 37 miles.  In the city, the hand-set could hear the base but the base could not receive the handset.
 The base has the antenna about 30 ft off the ground.
My father-in-law is the envy of all his friends!!
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