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  • k7mem's Avatar
    Today, 13:04
    Let's start with the word "ham". "ham" refers to Amateur Radio Operators. It is not a acronym and not capitalized. I am a Amateur Radio Operator, or ham, and have been licensed since 1965. Yes, I know. You see "ham" capitalized in advertisements regularly, but they are wrong. When the word "ham" appears in a advertisement for a radio (with or without caps), it means that the radio covers some of the frequencies that are available to "licensed" Amateur Radio Operators. For example, the BAOFENG UV-5R 136-174/400-480 MHz that you mentioned, covers 136-174 MHz and 400-480 MHz. Within that range is the 2 Meter (144-148 MHz) and 70 CM (420-450 MHz) Amateur bands. If you dig into the specs you will find out that, the wide frequency range is only for "receive". On transmit, only the 2 Meter (144-148 MHz) and 70 CM (420-450 MHz) Amateur bands are enabled. And, to use those bands, a license is required. The frequencies outside of those Amateur bands are for other commercial services, e.g. Aircraft. You don't...
    1 replies | 30 view(s)
  • StudentForLife's Avatar
    Yesterday, 20:28
    Hi to everyone I am new here and new to HAM (also not sure what "Yaesu" means). I was searching for a way to communicate if there is a global disaster and we cant use cellular phones, and we might end up in a forest for shelter during the global disaster, then I stumbled across HAM (I am referring to a disaster whereby satellite communication is also off line). Now I am totally new to this concept of HAM, but of course very interested to learn and buy this. Then I stumbled across the BAOFENG UV-5R 136-174/400-480 MHz Dual-Band DTMF CTCSS DCS FM Ham Two Way Radio and I wondered the following: 1. Can this Baofeng be used to communicate if I have one of this and a family member have another, but we are separated by a distance? Meaning can it be used as both a walky talky over a short distance of 3 miles in a forest, as well as over a long distance if for example we are in two separate forests?
    1 replies | 30 view(s)
  • tngw1500se's Avatar
    Yesterday, 11:29
    I hope they do the online tests.
    4 replies | 316 view(s)
  • K7KBN's Avatar
    Yesterday, 06:22
    Why use the term "successfully passed"? As opposed to "unsuccessfully passed" or "successfully failed"?
    4 replies | 316 view(s)
  • brandon lind's Avatar
    Yesterday, 03:44
    brandon lind replied to a thread Antenna model/type in Antennas
    That picture doesn't offer many clues. Its a concrete pole so its not on a power pole or sailboat. The cable spool is fixed to the pole rather than hung on it, and judging from the zip ties and untwisted cable wraps, I don't think its intended to be removed. Looking at the grey box and hanging hardware, I'd guess there is an array of wire antennas of some sort up there. My best guess is that inside that black canister is a balun/transformer and the cables wrapped around the spool are phasing lines for the array. Maybe the grey box consists of relays for selecting array elements or specific phasing lines.
    3 replies | 114 view(s)
  • essbee's Avatar
    Tue 31st Mar 2020, 23:37
    I ran across this the other day. Perhaps this will give some hope, even though it might not be available for a while. USA conducts first all-online ham radio exam. https://qrznow.com/usa-conducts-first-all-online-ham-radio-exam/
    4 replies | 316 view(s)
  • K6CPO's Avatar
    Tue 31st Mar 2020, 21:47
    K6CPO replied to a thread Antenna model/type in Antennas
    It looks like someone hung a car distributor and spark plug wires on an electric pole.
    3 replies | 114 view(s)
  • 5B4AJB's Avatar
    Tue 31st Mar 2020, 21:05
    5B4AJB replied to a thread Antenna model/type in Antennas
    Looks like a junction box - is that ladder line coming out? if so, it could be a balun for a wire antenna for use below 30MHz...
    3 replies | 114 view(s)
  • ttarzan's Avatar
    Tue 31st Mar 2020, 10:05
    ttarzan started a thread Antenna model/type in Antennas
    Hi, Please, can anyone tell me, what kind of antenna is this? Or its purpose? https://ibb.co/2ZjXMHM Thank you!
    3 replies | 114 view(s)
  • k7mem's Avatar
    Mon 30th Mar 2020, 20:02
    Well there is this: Anchorage ARC VEC. But by the time you get all the requirements together, the local VE sessions may be up and running again.
    4 replies | 316 view(s)
  • Tigerbrew's Avatar
    Sun 29th Mar 2020, 18:16
    Tigerbrew replied to a thread Which Ferrite Core in Antennas
    Cheers Brandon, I'll take a look at that. One source I have found is information from GM3SEK on both his website and his input through the RSGB. It loks like he really knows his stuff and it's his total shack mains filter I'm going to build.
    2 replies | 207 view(s)
  • brandon lind's Avatar
    Sun 29th Mar 2020, 03:33
    brandon lind replied to a thread Which Ferrite Core in Antennas
    Ferrites are the one thing in the electronics world thats not standardized. Each manufacturer has its own proprietary mixes. There are multiple manufacturers selling the same "type" ferrite, but they are rarely the same. The best thing you can do is study the website of the company you are buying from. Palomar, Amidon, fair-rite, mouser, just start reading. id start here: https://palomar-engineers.com/rfi-kits/acdc-power-line-chokes
    2 replies | 207 view(s)
  • G7NFP's Avatar
    Sat 28th Mar 2020, 16:08
    G7NFP replied to a thread Base Radios Newbee Survivalist question in Amateur Radios
    I done a little research. Google "iridium prepaid SIM cards". You can get one with around 300-500 Min which is valid for 365 days (12 month) for around $500+ USD. Then you need to buy/or rent an iridium handset. There are several different providers. So you need to find the best deal. I reckon it would cost you in the region of 2 grand + to buy 2 handsets & 12 month SIM cards for them. But that price would be reduced after a year if you had bought rather than rented the handsets. So you need to ask yourself. How much it would be worth to talk to your family in the event of such a disaster?. If it was myself, l would say no price would be too much if l could afford it. Fortunately my family lives close enough to me.
    6 replies | 338 view(s)
  • k7mem's Avatar
    Sat 28th Mar 2020, 14:15
    Depending on the current propagation, any band can be a extreme distance band. For example, 40 Meters (7MHz) is good for a couple hundred miles during the day. But at night, when F-Layers get higher above earth, radio broadcasts from all over the globe can be heard. Conversely, 10 Meters (28 MHz), at the peak of sunspot activity, can get you 3,000 to 4,000 miles during the day. But 10 Meters will close up at sundown. The simplest effective antenna might be the End-Fed. End-Fed antennas can be problematic if you are transmitting at high power. But you are not. There is a PDF available on balundesigns.com that will give you a good idea of lengths that work for End-Fed antennas using a 4:1 or 9:1 Balun at the feed point. Some lengths are good for 40-10 Meter coverage, while others are good for 160-10 Meter coverage. I have similar data on my web page on the Single Wire/End Fed Antenna.
    1 replies | 108 view(s)
  • 5B4AJB's Avatar
    Sat 28th Mar 2020, 13:44
    A shortwave loop should do for now. Now you're talking about a magnetic loop. Single point ground to the radio should be good enough. If you can't set up a nice, short ground to a real earth (stake), leave it disconnected. A bad earth, to mains earth for example, can introduce line noise to the receiver. Test your power supply versus battery noise level. For VHF aircraft, a crossed dipole, or better, a Lindenblad will give good results.
    1 replies | 117 view(s)
  • Tigerbrew's Avatar
    Sat 28th Mar 2020, 13:16
    Tigerbrew started a thread Which Ferrite Core in Antennas
    Hi all, a quick question. Does anyone know of any useful and/or particularly good articles about choosing and using ferrite cores/beads/clip-ons etc ? I'm about to build a total shack mains filter and although I'm building to a trusted design so know exactly which ferrites I need, I'd like to investigate the subject further for other applications and some well written info would be useful. Cheers, Steve
    2 replies | 207 view(s)
  • cabinman's Avatar
    Sat 28th Mar 2020, 03:08
    cabinman started a thread FTM--100D in Yaesu
    all of a sudden my ftmn100d wont come on..checked fuses all good 13.8 going to unit...power supply putting out correct voltage...any ideas appreciated. this is a new unit
    0 replies | 77 view(s)
  • Jstew's Avatar
    Fri 27th Mar 2020, 20:18
    Anyone know why they only solder one side, thinking about soldering it but not sure if there is a good reason they didnít. New old guy, Kg6jxs, my lisc expired years ago and Iím having trouble getting a new test because of coronavirus. Just gearing up.. FA technician by profession. Iím thinking board flex issues or some sort of tuning? Or lazy/cheap? Thx in socal these days.
    0 replies | 62 view(s)
  • K7KBN's Avatar
    Fri 27th Mar 2020, 18:09
    K7KBN replied to a thread New propagation mode!!! in Propagation
    "... and don't call me Shirley!"
    3 replies | 232 view(s)
  • andrew100's Avatar
    Fri 27th Mar 2020, 17:40
    What kind of outdoor antenna would be effective for the Kenwood ts 590s being used to receive only ? I would be most interested in extreme distance bands. Yous input would be very helpful. Thank you. :listening_headphone:
    1 replies | 108 view(s)
  • brandon lind's Avatar
    Fri 27th Mar 2020, 17:03
    you're probably right...
    3 replies | 232 view(s)
  • G7NFP's Avatar
    Fri 27th Mar 2020, 14:55
    G7NFP replied to a thread Base Radios Newbee Survivalist question in Amateur Radios
    Have a look at "Garmin inreach". The lowest monthly charge is about £14.99 ($18.50 USD). Then compare the contracts from other providers. May get a better deal for am annual contract. The above mentioned price is for a monthly contract. A satellite SIM card is much the same as a cell phone SIM card. Only it costs more. So have a look at the various sat phones on the market & the best contracts to suit your needs.
    6 replies | 338 view(s)
  • andrew100's Avatar
    Fri 27th Mar 2020, 14:53
    I am new to ham radio. I've purchased a Tecson S2000 receiver and would like to connect an improved external PLUG-IN indoor. Would like to improve all bands but especially extreme distance reception. Would like to use one that does not overwhelm the RF input, good signal to noise ratio. The antenna would be located near the unit. I believe the receiver has a coax input for this feature. However, I would need to know if the antenna coax needs to be grounded one end, both ends and information of that sort. Any help with these matters would be greatly appreciated. I've browsed around somewhat but have found no significant information that addresses specific brands and models of antennas for this application. If a small outdoor antenna is applicable I can mount such a device as well if the performance over an indoor would justify such a product.
    1 replies | 117 view(s)
  • G7NFP's Avatar
    Fri 27th Mar 2020, 13:50
    G7NFP replied to a thread Base Radios Newbee Survivalist question in Amateur Radios
    Assuming the disaster would wipe out 2m/70cm repeaters + cell phone towers, you have only one option to communicate with someone over that distance. You did say money wasn't an issue. Therefore your answer is to buy a couple of satellite phones. Not a cheap conversation, charged by the second or Min. But unless someone shoots down the satellite communication will be possible from/to anywhere on the planet. Hope that helps. 73 Jim (from UK).
    6 replies | 338 view(s)
  • 5B4AJB's Avatar
    Fri 27th Mar 2020, 13:48
    5B4AJB replied to a thread New propagation mode!!! in Propagation
    surely they'll be too small for anything below about 10GHz?
    3 replies | 232 view(s)
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