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#1
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is an STA needed to transmit data on CB channel 40?
All,
I've got a brother who works for a consulting firm whose main customer is Homeland Secrity. What the feds want to do is to be able to communicate mil-spec digital packets over low power links in the middle of a disaster-hit area between squads of Guards deployed across a destroyed city. They cannot assume that hams and ham equipment will be available, and they do not want to carry heavy equipment into a city. They want to be able to use equipment that they can readily commandeer from stores such as Radio Shack. That pretty much means CB radios. I have heard of hams working DX using 5 watts of PSK on 10 meters using poor antennas, so that gives me the idea that Guard units could form medium range mobile networks using 5 watts of PSK on 11 meters using wires dropped off bridges. Eventually the hams that do get on the scene could set up a CB to HF gateway so that the packets could make it out from the Guards to the NGOs. While I am more than willing to test this setup out for my brother on a pair of CB radios, I told him I might need an STA from the FCC to communicate data on CB channel 40. He tells me that in an emergency, anyone can use any frequencies they want, any power, any mode. I told him true, but that does not help me as an OEM getting fined for testing out an emergency scenario in a nonemergency situation. Suggestions? The Eternal Squire |
#2
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is an STA needed to transmit data on CB channel 40?
The CB band is close enough to the 10m amateur band ,such that when the
test is done within the amateur band it would also be valid for the CB band . Although you might have to do the test in the 10m amateur band with 300 baud ,whereas in the CB band you could use 1200 Baud. Unless the 300 Baud limit in amateur allocated HF bands has been / can be lifted. Frank GM0CSZ / KN6WH =============================================== While I am more than willing to test this setup out for my brother on a pair of CB radios, I told him I might need an STA from the FCC to communicate data on CB channel 40. He tells me that in an emergency, anyone can use any frequencies they want, any power, any mode. I told him true, but that does not help me as an OEM getting fined for testing out an emergency scenario in a nonemergency situation. Suggestions? The Eternal Squire |
#3
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is an STA needed to transmit data on CB channel 40?
wrote in message oups.com... All, I've got a brother who works for a consulting firm whose main customer is Homeland Secrity. What the feds want to do is to be able to communicate mil-spec digital packets over low power links in the middle of a disaster-hit area between squads of Guards deployed across a destroyed city. I can't believe they would be asking a company with such a lack of knowledge that you have to post a message to a newsgroup! I think you're telling a bit of a fairy tale. They wouldn't be using CB as there is a vast array of communications equipment already in use - or did your brother forget to tell you that. What's the name of his company so we can all avoid what appears to be bunch of amateurs. |
#4
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is an STA needed to transmit data on CB channel 40?
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#5
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is an STA needed to transmit data on CB channel 40?
wrote in message
oups.com... All, I've got a brother who works for a consulting firm whose main customer is Homeland Security. Please supply me this consulting firm name. Is this former FEMA director Mike Brown's consulting firm by chance? |
#6
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is an STA needed to transmit data on CB channel 40?
In article .com,
wrote: While I am more than willing to test this setup out for my brother on a pair of CB radios, I told him I might need an STA from the FCC to communicate data on CB channel 40. He tells me that in an emergency, anyone can use any frequencies they want, any power, any mode. I told him true, but that does not help me as an OEM getting fined for testing out an emergency scenario in a nonemergency situation. I think you're correct. Part 95, section 631 (c) and (e) and (f) make it quite clear that data transmission over CB is a no-no. In addition, the simple act of hooking up a data transmission circuit to a CB radio's modulator might be considered to be enough of a modification to void the transmitter's certification. Applying for an STA certainly seems to be the safe thing to do. And, if you get one yourself, the end-user agency should probably also get one, so they can run periodic tests and drills without breaking the rules. -- Dave Platt AE6EO Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior I do _not_ wish to receive unsolicited commercial email, and I will boycott any company which has the gall to send me such ads! |
#7
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is an STA needed to transmit data on CB channel 40?
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#8
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is an STA needed to transmit data on CB channel 40?
) writes:
While I am more than willing to test this setup out for my brother on a pair of CB radios, I told him I might need an STA from the FCC to communicate data on CB channel 40. He tells me that in an emergency, anyone can use any frequencies they want, any power, any mode. I think this is a misreading of the rules. Yes, if someone's ship is sinking, or someone is lost in the mountains, it is far better to use what's available than die. But, I seem to recall some cases in the US where someone just blasted away, and it was deemed later that the emergency was not serious enough. But, the scenario you are talking about is not the same thing. You aren't talking about someone trying anything to save themselves, you are talking about organized emergency work. And once that starts happening, you can't have anything goes, for the same reasons that there are rules to regulate radio under non-emergency conditions. If you blast away at any frequency or any power, then you could so easily interfere with some other legitimate emergency communication. Your communication may not be more important than someone else's, and hence frequency coordination is just as important. It has been long argued that one reason to keep amateur radio around is that in the case of a big emergency, it's relatively easy to put amateur radio to rest, and then you get some big chunks of spectrum that won't be used for necessary or emergency communication. IN other words, using amateur radio frequencies is one scenario that is already planned if the emergency is important enough (aside from it being used as auxiliary communication with hams using their existing equipment. But, life goes on, and you can't superimpose a lot of communication onto frequencies that are needed for existing communication needs which won't go away when an emergency comes along. And on a completely other note, as others have pointed out, even if an existing communication band is the only choice, there are far better choices than the 27MHz band. A big problem of that band is that when the skip is in, it's made fairly useless because distant stations come in nice and strong. And likewise, you want a band that's good for local communication, and the fact that you can get great range under good conditions on 10meters is not the same as getting good reliable local communication. Michael VE2BVW |
#9
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is an STA needed to transmit data on CB channel 40?
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#10
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is an STA needed to transmit data on CB channel 40?
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