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Everything posted by SteveShannon
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Can I use Morse code to identify myself on my GMRS handheld radio?
SteveShannon replied to Slickii's topic in myGMRS.com
Do ham radio vendors require a call sign before selling a radio? -
Welcome! I’m very sorry for your loss. if you haven’t already found it, I found HamStudy.org to be an extremely effective way to study for my ham license.
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Requesting CHIRP Programming data for Repeater Programming
SteveShannon replied to WSCU756's question in Technical Discussion
But if you leave it in Tone mode instead of TSQL, it doesn’t matter what the receive tone is. -
I don’t know much about the settings in the Retevis, but for some radios (Baofeng in particular ) the discrete squelch settings may be assigned to different levels on a wider spectrum. Randy talks about that at about the 10 minute mark in this video: And he posts a link to an article about it here: https://www.miklor.com/COM/UV_Squelch.php I don’t know if your repeater has a setting like that
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Wouxun KG1000G+ Install - Advice?
SteveShannon replied to Sonicgott's question in Technical Discussion
Just buy some 12 gauge stranded insulated copper wire from an automotive supply store (avoid CCA or Copper Clad Aluminum). If needed pay someone to terminate it correctly. Or take it to an automotive stereo installer. -
I just ordered a Retevis RA87, anyone run one?
SteveShannon replied to SvenMarbles's topic in General Discussion
Press MR key for 1 second. Pages 9 and 10 in the manual. -
I agree that’s how it should work, but try it to be sure. As far as more range, it will now trigger on a weaker signal. You might find that it doesn’t drop the transmission or something like that.
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You could set it to zero because you also have CTCSS or DTCSS, don’t you? But you’ll have a few more low level transmissions.
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Wouxun KG1000G+ Install - Advice?
SteveShannon replied to Sonicgott's question in Technical Discussion
Extend the power cable. -
The addition of coax typically reduces the measured reflected power, resulting in a lower observed SWR.
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Mobile antenna grounding: is cable resistance and length important?
SteveShannon replied to AccuNut's question in Technical Discussion
1. Yes, theoretically, but you’re really asking about how well the various body parts are bonded. If you have enough impedance between where you connect the black wire of your radio and the negative post on your battery, you’ll see a voltage drop to the radio, worse at high current. 2. Yes Your chassis ground is a DC ground used as the return for the car’s electrical system. Your ground plane does not need to be connected to your chassis ground. You could use a sheet of metal completely isolated from your vehicle as your ground plane, but your radio requires a good low impedance path for its dc power source. -
Look up their address from their call sign and send them snail mail if they aren’t a member here.
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Most people do not approach GMRS as a hobby to itself. They’re not really interested in making and logging QSOs. I use GMRS as a communication tool while pursuing my other hobbies. But, there’s nothing wrong with what you suggest. Just don’t expect QSO cards or log verifications like you get on QRZ.com A friend of mine uses a composition book for logging his ham QSOs. I use the logbook built into HRD for my ham QSOs. I used to just use QRZ.com ARRL makes a nice compact paper booklet for logging. Amazon has it for about $8.
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TIDRadio TD-H3 GMRS - Channel Restrictions?
SteveShannon replied to danlag's question in Technical Discussion
He may consider that a challenge. Don’t encourage him. -
Wouxun KG1000G+ Install - Advice?
SteveShannon replied to Sonicgott's question in Technical Discussion
Is there room under your back seats? It actually looks like there’s room under your console. You might find that by separating the body from the face of the radio you have more flexibility. -
Email.
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Can I use Morse code to identify myself on my GMRS handheld radio?
SteveShannon replied to Slickii's topic in myGMRS.com
Some repeater controllers ID using Morse Code. The 70 cm repeater we use as a ham repeater does this. However, my understanding is that it does its identification without CTCSS. That helps in two related ways. The users of the repeater who have CTCSS set for receive don’t hear the ID, but anyone listening without CTCSS will hear the Morse code. -
Running Node on Raspberry Pi 4/Modifying Hamvoip
SteveShannon replied to FrostyFruits's question in Technical Discussion
It’s a csv file formatted to work in chirp. Because it’s a csv file you should be able to manipulate it however you want.- 39 replies
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- raspberry pi
- raspberry pi 4
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Please tell us more.
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New Repeater Channels for GMRS in 2024
SteveShannon replied to intermod's topic in FCC Rules Discussion
What? Hopefully none. Now if you intended to ask: Are there any repeaters in ME? (Maine) We might be able to show you how to find them on the repeater pages of this site. -
Baofeng UV9G Repeater connection failure.
SteveShannon replied to CoffeeTime's topic in General Discussion
Program a radio to listen using the repeater input frequency and CTCSS tone. Can you hear the other radio transmit? -
Baofeng UV-5G GMRS Repeater Setup
SteveShannon replied to Mav3rick's question in Technical Discussion
Program one radio to listen on the repeater input frequency and CTCSS code. Can you hear your transmission? -
Don’t try to pet the big black fluffy things!
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Why is Technical Discussion format different from the others?
SteveShannon replied to 808Beachbum's topic in myGMRS.com
This! The answer voted highest will be the first one a person sees after reading the question. -
Maybe this will help: When it comes to antennas, gain is a measure of concentrated RF emissions. Antenna gain does not increase the power of the radio, but it focuses it so that it’s directed where you need it. But there must be a reference of some sort. The most basic reference is an isentropic antenna. Think of a bare bulb which shines evenly in every direction. That’s what an isentropic antenna represents, a theoretical reference antenna reduced to a single point that radiates RF in all directions evenly. By definition, radiating in all directions adds nothing extra to any direction and so the gain in any direction is said to be 0 dB. That 0 dB value is something that all other antennas can be compared against. When other antennas are compared to that reference point, their gain values are listed in units of dBi, or decibel isentropic. But nobody makes an isentropic antenna. It’s really hard to make a geometric point radiate. The next simplest antenna design is a dipole, two equal length pieces of wire that are each a quarter wavelength long. So, for a 2 meter wavelength radio, each pole would theoretically be 1/2 meter. A dipole radiates RF in a toroidal shape that surrounds the wire. In the direction of greatest concentration it has 2.15 dBi of gain. Towards the ends of the dipole the RF is much lower and sometimes nearly nil. The gain has to come from somewhere. Because they are very common and exist in reality, the gain of a dipole is sometimes also used as a reference, called dBd, or decibel dipole. dBd and dBi are mathematically tied together by the following equation: 2.15 dBi = 0 dBd. You can convert from one to the other by simply adding or subtracting 2.15 dB. So now here’s my beef. Many vendors advertise gain as dB, without specifying dBi or dBd. Without knowing which it is, you have no way of knowing if you’re comparing apples to apples or oranges. Midland advertises their MXTA-26 as 6 dB gain, but that’s a meaningless, possibly even misleading figure. If that’s 6 db of gain referenced to the theoretical isentropic antenna, it’s really only 3.85 dB gain compared to a wire dipole. You’re probably sorry you even commented on my previous post and @OffRoaderX now has one more example of a sad ham going into way too much detail, but I’m one of those people that thinks this stuff matters.
- 20 replies
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- antenna
- co-phasing
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(and 2 more)
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