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Everything posted by SteveShannon
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An interesting proposal for GMRS+
SteveShannon replied to SteveShannon's topic in FCC Rules Discussion
Hmmm, the document link works for me on both my phone and my laptop. If you click on the second link, which is the filing, then you can click on the link to the PDF near the top. -
While I was on the FCC site today trying to decide what (if anything) to enter into the public record about the Midland proposal for digital mobile GMRS radios and digital voice on GMRS, I stumbled across this document: https://www.fcc.gov/ecfs/document/121859354063/1 Here's the filing details: https://www.fcc.gov/ecfs/search/search-filings/filing/121859354063
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Reusing existing (TV?) antennas for base station and/or repeater
SteveShannon replied to WRZY540's question in Technical Discussion
No, I said: Such as this: https://www.americanradiosupply.com/uhf-male-to-f-female-coaxial-adapter-connector/?gclid=Cj0KCQiA1rSsBhDHARIsANB4EJaXnN6NDUi0pnfCrPC7u1jPPlHuNPlbzokazzddein9TZ6qF3Rgw_0aAjaEEALw_wcB- 11 replies
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You just got your GMRS license, now you want your own repeater?
SteveShannon replied to coryb27's topic in General Discussion
Yes, one repeater transmitting to another repeater results in an infinite loop. You transmit on Channel A to the small repeater. The small repeater repeats your transmission on Channel B so it can be received by the big repeater. The big repeater must transmit on Channel A or your small repeater would never receive it. When the small repeater receives it on Channel A it repeats it on Channel B where it is received by the big repeater. Infinite loop. There are ways to link repeaters to accomplish what you suggest using network connections. -
Reusing existing (TV?) antennas for base station and/or repeater
SteveShannon replied to WRZY540's question in Technical Discussion
I would use the coax. It’s not perfect but it’s not terrible. It’ll prevent you from getting an swr better than 1.5:1, but most people are satisfied with that.- 11 replies
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Reusing existing (TV?) antennas for base station and/or repeater
SteveShannon replied to WRZY540's question in Technical Discussion
The dish is a satellite antenna with an LNB as part of the assembly. It has no practical possibility of being repurposed to 462-467 MHz frequencies. The one you called a Yagi is really a log periodic. Log periodic antennas are very wideband. It might be repurposed, but without an antenna analyzer or VNA it might be difficult. It’s very directional so it would not be ideal as a repeater antenna unless you wish to limit your communications to a narrow field. But if you’re pointing it at a distant repeater it could be okay. Also the coax is 75 ohm rather than 50 ohm. That will limit how low you can get the SWR, but it’s not the kiss of death. You will need an F to UHF adapter though. They’re easy enough to obtain. I would hook up to the log periodic antenna, point it at a repeater and see if you receive. If you do, try transmitting on low power. Even if you have a high SWR by using low power you help protect your final transistors from damage.- 11 replies
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If you’re hearing music and broadcast news it’s probably not a repeater. Or if it is they’re operating in violation of the regulations. Repeater traffic should only be people talking to each other. Because the frequencies you hear repeaters on are the same frequencies you hear people transmitting on using simplex it can be impossible to know if something is a repeater based on an occasional transmission unless you hear the repeater ID.
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GMRS radios in Canada must be 2 watts or less, marked “IC” (Canada’s FCC) and permanently attached antennas. There are no repeaters.
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Simplex on private repeater output w/ tone
SteveShannon replied to UncleYoda's topic in General Discussion
UncleYoda, You absolutely are within your rights and the regulations to transmit on the 462 MHz main channels. They’re yours as much as they belong to anyone else. And there’s nothing wrong with using the same tones that a repeater uses. However, it could be confusing to anyone who hears you. They would have no way to know whether they were hearing the repeater or someone on simplex. If they transmit in simplex on 462 the repeater would not relay the signal so you might not hear them. Similarly your transmissions will be limited in range. Some people listening to the repeater might not hear you at all which could lead to them inadvertently interfering with your transmissions. It’s not something I would do, but you’re within your rights. -
The only person who can help is Rich:@rdunajewski I’ll report your post to catch his attention.
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My next DMR radio will be one of the radios that the Blind Hams version of Open GD-77 targets. A blind/deaf ham friend of mine is interested in the Tytera MD-UV380. He uses implants to hear his radio, so audio hints help him be independent, but on his way to independence maybe I can help by learning the software.
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HYS 11 db Yagi receiving signals from all directions
SteveShannon replied to WRZC903's question in Technical Discussion
Okay: https://www.ecfr.gov/current/title-47 -
HYS 11 db Yagi receiving signals from all directions
SteveShannon replied to WRZC903's question in Technical Discussion
But since you asked to be pointed, here are the GMRS rules: https://www.ecfr.gov/current/title-47/chapter-I/subchapter-D/part-95/subpart-E -
Merry Christmas!!!
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New GMRS user, looking for others in my area.
SteveShannon replied to Puzzles's topic in General Discussion
As others have pointed out GMRS is most frequently used between two or more people who know each other, but there’s nothing wrong with joining in a net or even transmitting on an unused channel hoping to make contact with other GMRS users. You could set your radio to scan the main 462 MHz channels to see if you receive any repeater traffic (repeaters transmit on the main 462 channels but the channels are shared with simplex users as well.) Welcome to the forums and Merry Christmas! -
Yes, there is a driver that is compatible with W11. It might even be the one that works for W10. There were some problems when MS changed their driver model but by now the larger companies have caught up. Be sure you install the factory driver before plugging in your cable because otherwise Windows will attempt to install a driver that might or might not work.
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Repeater TX RX & Talkabout (Direct) TX RX
SteveShannon replied to WRZM243's question in Technical Discussion
Yes, sorry, I did mean Talkaround. I understood it as exchanging the Tx and RX frequencies. I could be mistaken. post script- I was wrong. I was thinking of Reverse. -
Repeater TX RX & Talkabout (Direct) TX RX
SteveShannon replied to WRZM243's question in Technical Discussion
You could be right but talkabout is a function that reverses the transmit and receive frequencies normally used to communicate through a repeater. That’s why I interpreted it as I did. Unless the OP says something we might not know what was meant. -
Repeater TX RX & Talkabout (Direct) TX RX
SteveShannon replied to WRZM243's question in Technical Discussion
Transmitting on the 467 MHz main channels is only allowed by the regulations to communicate through a repeater or for testing (or between two Fixed Stations), so if you mean for one person to be transmitting on a 467 main channel directly to another person who is then responding on the matching 462 main channel, it would technically only be allowed while testing, not as a full time communications mode. Or did I miss your point? -
Midland MXT275 keeps receiving static bursts…
SteveShannon replied to sycboi's question in Technical Discussion
Perhaps bonding the body parts of your vehicle will help. Some people do it. I haven’t, but I don’t seem to have the same problem. http://www.k0bg.com/bonding.html