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1-10 of 33 messages
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Walkie Talkie Communication Using a VX-7R
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by KD8IXU on August 5, 2009
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First, my callsign is KD8IXU. Anyhow. So all the equipment I have is a modified VX-7R. Which is fine for now. But enough of that. To my problem. I have a Motorola T5950 walkie talkie with 22 channels and 100 interference eliminator codes. I want to transmit on my VX-7R so that I can talk to my family with the more primitive radios. The problem is I can't transmit at all even if i have just the straight up frequency without a CTCSS or DCS tone. and no matter what my tone is on my Moto, i can receive it on my Yaesu. I really just need some help on what the problem could be and what i can do about it.
73
Mishael Bingham,
KD8IXU
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RE: Walkie Talkie Communication Using a VX-7R
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by W3LK on August 5, 2009
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Sorry to be the bearer of bad news, but you cannot legally use your little Yaesu to talk on GMRS frequencies.
Yon can't legally use your Yeasu to talk on ANY frequencies outside the amateur bands except for MARS frequencies, and that required a separate license issued by one of the three MARS services.
If you want to talk to your family, get another Motorola or other GMRS radio.
<< So all the equipment I have is a modified VX-7R>>
Curiosity compels me to ask you what it is modified for, considering my second paragraph?
73,
Lon - W3LK
Naugatuck, Connecticut
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RE: Walkie Talkie Communication Using a VX-7R
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by W3LK on August 5, 2009
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PS ...
You DO know that your GMRS radios are not on license-free frequencies and you need a GMRS license, don't you?
73,
Lon - W3LK
Naugatuck, Connecticut
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RE: Walkie Talkie Communication Using a VX-7R
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by KD8IXU on August 5, 2009
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But if they sell them at the store shouldn't you be able to just use them? and I'm not sure what it is modifyed for cause I bought it used although I can transmit on any frequency aside from the logical ones and ironicly the CB frequencys I get an error message saying I can't.
Also why would they list all the frequencies in the actual manual for the radio?
I guess thirdly, i have one for myself but its cumbersome to carry around my 7R AND a primitive radio while I could just go dual band receive.
Oh and another thing, why would the UHF frequencies in question be blocked from my radio? I know the 300 mHz area is blocked for cell phones, why isn't the GMRS UHF portion?
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RE: Walkie Talkie Communication Using a VX-7R
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by W3LK on August 5, 2009
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<< But if they sell them at the store shouldn't you be able to just use them? >>
Not to be smart-mouthed, but did you read the manual that came with them. I have never seen a GMRS radio yet that didn't put the requirement of a license in the manual in rather large letters. There are only three radio services that do not require licenses - the 11m Citizens Band, the Multi-use Radio Service and the Family Radio Service. Everything else requires a license of some sort. All three use low-power radios and not can be used to talk to other services.
<< and I'm not sure what it is modifyed for cause I bought it used although I can transmit on any frequency aside from the logical ones and ironicly the CB frequencys I get an error message saying I can't.
Also why would they list all the frequencies in the actual manual for the radio? >>
You lost me. There are no CB frequencies even close to the operating range of either your Yaesu or the GMRS radios.
<<I guess thirdly, i have one for myself but its cumbersome to carry around my 7R AND a primitive radio while I could just go dual band receive. >>
Welcome to reality. No matter how convenient it might be, what you want to do is simply illegal. Your amateur radio license doesn't authorize you to transmit on ANY BUT amateur radio frequencies, no mater what frequencies your Yeasu might cover. With all due respect, the little Motorola is far from "primitive"; it a rather sophisticated little radio. It simple covers a single range of frequencies at low power.
<< Oh and another thing, why would the UHF frequencies in question be blocked from my radio? I know the 300 mHz area is blocked for cell phones, why isn't the GMRS UHF portion? >>
Your question is contradictory. Either the GMRS frequencies are blocked or they are not. It's not illegal to listen to GMRS frequencies on your Yeasu, just to transmit on them. BTW, I don't know where you are getting your information, but there are no cell phone frequencies in the 300 mhz range.
Please don't take this the wrong way, but how old are you and how long have you been a ham? You seem to have some confusion as to what you can and cannot do with a Technician class amateur radio license.
73,
Lon - W3LK
Naugatuck, Connecticut
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RE: Walkie Talkie Communication Using a VX-7R
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by KD8IXU on August 5, 2009
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I fully understand that everything youre saying is for advice sake, not to insult me. Yes i did read the manual too. Alright in short, I got my license last year, im 15, and this is low power (1 or .5 watt). if you look up the model number of my radio its one of the family band ones i believe. the operating band is UHF and i actually figured it out. It only has 22 preprogrammed channels. and i was lead to believe that CB was 28 mHz or something. My source is some random bit of information that i heard, i figured it was wrong. Thanks for the help though.
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RE: Walkie Talkie Communication Using a VX-7R
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by KB1LKR on August 5, 2009
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Class D (11m) CB is in the 27 MHz band, 40 channels 26.965 to 27.405 MHz. Additionally there's 5 Class C radio control channels intermingled w/ the voice channels.
GMRS is a superset of FRS. FRS consists of 7 channels in the 462 MHz band (shared w/ GMRS) and 7 in the 467 MHz band and requires no license, just FCC certified transmitters.
GMRS (which requires a license -- $80 for 5 years & covers all immediate family members -- allows more power, removable antennasm repeaters and includes shared w/ FRS channels (1-7 @ 462 MHz band), plus 8 additional GMRS only channels in 462 MHz band and 8 additional repeater input channels in the 467 MHz band.
MURS is a non licensed 5 channel 2W radio service at 150 MHz -- but not commonly used like FRS & GMRS. again FCC certified transmitters are needed.
The (analog) cellular band you're thinking of is "900 MHz" 869-894 MHz if I recall.
It is possible that your VX-7R has had an internal jumper changed/removed to permit it to transmit (not necessarily efficiently) outside of the north american amateur bands (6m, 2m & 70cm, also 1.25m at low power? on that model?). Note though, that in spite of the existence the mod to "open it up" also known as the MARS or MARS/CAP mod -- after the MARS & CAP military affiliate services. it remans illegal to transmit outside of the amateur bands (MARS or CAP potentially excepted *IF* you also have a MARS or CAP license/callsign).
In short you are not permitted (in the US anyway) to use it as a GMRS, FRS, MURS, aviation, VHF marine, public safety, business, CB, etc. transmitter, thouhg you may use it to listen to most/all these, analog cellular excepted -- not that analog cellular gets much use these days.
For more on GMRS see: http://wireless.fcc.gov/services/index.htm?job=service_home&id=general_mobile
Hope that helps. Sorry that you have to carry two radios though.
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RE: Walkie Talkie Communication Using a VX-7R
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by KD8IXU on August 5, 2009
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so lets just say that im a bad operator and disobeyed the law for FRS. what would my penalties be?
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RE: Walkie Talkie Communication Using a VX-7R
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by W3LK on August 6, 2009
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<< so lets just say that im a bad operator and disobeyed the law for FRS. what would my penalties be?>>
Well, at best, nothing. At worst, you could lose your amateur radio license and possibly be fined for each occurance. Equally important is your reputation; most hams have little, if any, respect for deliberately bad and illegal operators.
Do you REALLY want to willfully want to commit illegal acts simple to keep from having to use a second radio? I know you are only 15, but age is no excuse, in my opinion, and is a really bad way to start in amateur radio.
I think way too much of MY license to risk it for such foolishness.
As to your original technical question, I don't think anyone here is going to help you violate FCC rules. I know I won't.
73,
Lon - W3LK
Naugatuck, Connecticut
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RE: Walkie Talkie Communication Using a VX-7R
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by KD8IXU on August 6, 2009
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Well Ill tell you im not. I'm planning on actually purchacing a license. I found where it says in the manual. Last page, bottom, small print. My major question now is: How would they plan on enforcing that law? or even finding out who is operating without a license? Its next to impossible
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