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  • WA7JS's Avatar
    Yesterday, 14:55
    Looking for recommendations on portable/mobile radio 2m/70cm. Need to perform Winlink and other digital modes. Price vs quality is usually an issue, please give me your best ideas. I have a nice ICOM 746Pro for HF that I bought used but my current mobile radios or cheap chinese radios that work but I would like to consider some better quality ones. My challenge with the cheap Chinese models are the lack of support and information on how or if they support digital, specifically how to create a cable. I am not talking about the BaoFengs which I have working with Winlink but mobile models like the Zastone D9000 I am unable to determine if it will support digital modes. I would prefer one radio for portable ops. Thanks for your suggestions, John WA7JS
    0 replies | 18 view(s)
  • glovisol's Avatar
    Yesterday, 08:28
    PART 4 Here below is the spreadsheet calculation and frequency response of the broadband matching antenna network A more robust antenna can be made by adding the sides of the square to the cross members, as shown below.
    3 replies | 368 view(s)
  • 5B4AJB's Avatar
    Mon 21st Oct 2019, 07:54
    5B4AJB replied to a thread Base Radios Radio for music and DX? in Amateur Radios
    Almost all H.F. transceivers are general coverage, they will all tune AM broadcast frequencies. With hindsight, I would search for a secondhand H.F. transciever from the big 3, Icom, Kenwood or Yaesu. I started out with a Sony 5900 general coverage receiver, while it was adequate for music & voice, WEFAX was another scenario as the receiver had slow frequency drift. An amateur transceiver will have far more options built in than most shortwave receivers, useful options like IF and AF notch, better overload handling, attenuators etc. All receivers sound different, you have to find the kind of sound you like best, personally, I like Kenwood, some might say its a bit muddy sounding compared to others.
    1 replies | 133 view(s)
  • Echo's Avatar
    Sun 20th Oct 2019, 10:32
    Echo started a thread Base Radios Radio for music and DX? in Amateur Radios
    Hello, I am new here. I am sitting in Germany and like to buy a radio in order to listen to the music- and speech- program from English and Spanish radio stations from America. Therefore I wanted to buy a radio only for receiving. I thought about the Tecsun S2000 and the Tecsun S8800e But I am also interested in obtaining the radio amateur licence and once in a while taking part in DX conversation. So I wonder if I could use an amateur radio also for listening to musik-programs from overseas if I connect it with my stereo equipment. Is this a good idea or would I loose sound quality and better buy two separate devices?
    1 replies | 133 view(s)
  • M0WAO's Avatar
    Sat 19th Oct 2019, 20:19
    M0WAO replied to a thread Dr Ham in Chinese Radios
    Please see page 40 of the owners manual; http://www.wouxun.com/resource/UV6D_PEN.pdf 73 m0wao
    1 replies | 90 view(s)
  • normd's Avatar
    Sat 19th Oct 2019, 17:04
    normd replied to a thread digi mode on 20m in Bands & Modes
    Thanks it is FT4 :D
    5 replies | 227 view(s)
  • KD3WB's Avatar
    Sat 19th Oct 2019, 14:45
    KD3WB replied to a thread digi mode on 20m in Bands & Modes
    Sounds like FT4. http://www.arrl.org/news/faster-more-contest-friendly-ft4-digital-protocol-to-debut-in-a-week http://physics.princeton.edu/pulsar/k1jt/wsjtx.html Ben
    5 replies | 227 view(s)
  • normd's Avatar
    Sat 19th Oct 2019, 10:22
    normd replied to a thread digi mode on 20m in Bands & Modes
    quick video of the digi I am asking about. Cheers :)
    5 replies | 227 view(s)
  • normd's Avatar
    Sat 19th Oct 2019, 08:05
    normd replied to a thread digi mode on 20m in Bands & Modes
    I'll get a recording I don't think it's olivia
    5 replies | 227 view(s)
  • Dave Cav's Avatar
    Fri 18th Oct 2019, 23:55
    I just got an Alinco DR-735; it's my first Alinco. Most of my other radios are Yaesu. The problem I am having is switching to a different memory channel via the microphone keypad. I have entered a number of memory channels and can switch between them with the frequency knob and the up/down buttons on the microphone, but the radio will not accept numbers from the microphone when in channel mode. If I am in frequency mode I can change frequencies via the mike keypad, but not channels in channel mode. I have combed through the manual and can't find any applicable menu settings. Even the most basic radio will generally let you do this, so I'm at a loss as to why I'm unable to do so, given that switching from channel #100 to #400 (for example) via the knob or up/down buttons would be a painful exercise. Any help would be most appreciated. thanks Dave KG7HBQ
    0 replies | 71 view(s)
  • DR Ham's Avatar
    Fri 18th Oct 2019, 20:56
    DR Ham started a thread Dr Ham in Chinese Radios
    I have a Wouxun KG-UV6D V2 and the ability to manually program is inoperative. Is there a factory reset key/hole in the radio to insert something? Is there a key hold when turning on the radio that will "unlock" it? This is unusable at this time.
    1 replies | 90 view(s)
  • glovisol's Avatar
    Fri 18th Oct 2019, 15:43
    PART 3 The simple loop antenna made with wood strips salvaged from a pallet and previously mentioned is shown below: Its series inductance of 2.8 uH, can be embedded into a low pass matching network such as the one shown below:
    3 replies | 368 view(s)
  • KD9KVS's Avatar
    Fri 18th Oct 2019, 14:17
    Welcome, glad to have you aboard, and thank you for your years of service. I think it is awesome to see you advancing your license for more privileges on air. Glad you have a local support group to help you continue in the hobby. Again welcome. Look forward to seeing your questions and input.
    1 replies | 103 view(s)
  • 5B4AJB's Avatar
    Fri 18th Oct 2019, 13:29
    5B4AJB replied to a thread digi mode on 20m in Bands & Modes
    A recording would help! PSK centres around 14.070, what you're hearing is probably MFSK multi-tones like Olivia...
    5 replies | 227 view(s)
  • owenb_'s Avatar
    Thu 17th Oct 2019, 20:06
    Thanks guys. I'm only using about 12' of cable but it still sounds like I should go with something else.
    3 replies | 223 view(s)
  • normd's Avatar
    Thu 17th Oct 2019, 17:38
    normd started a thread digi mode on 20m in Bands & Modes
    Hi I keep hearing a digi mode here in the UK i don't recognise on 14.080 and just wondered if someone can tell me what is it?
    5 replies | 227 view(s)
  • KC3NPG's Avatar
    Thu 17th Oct 2019, 16:16
    Hello all. Hope to learn more about the hobby. I'm recently licensed general class, no HF equipment yet. Still playing around on HT UHF/VHF. U.S. Army vet, served at the U.S. Army Signal School Fort Gordon GA (73 -74) and with Berlin Brigade (75 - 76). Worked for AFN-TV Berlin as a news producer and director. Currently IT manager for a software company and looking to retire pretty soon. Local club is W3TWA.org, great bunch of guys and gals! Check out on EchoLink Wednesday nights at 20.00.
    1 replies | 103 view(s)
  • brandon lind's Avatar
    Thu 17th Oct 2019, 14:15
    From a voltage and dielectric standpoint, that coax is rated for 900Vrms. Assuming the worst case scenario of a complete mismatch providing an infinite SWR, the maximum the RF voltage applied to the coax should be half that value, or 450Vrms. This will ensure that under total signal reflection (standing wave sees 2x the voltage you put in), the voltage of the standing wave never exceeds the operating voltage of the coax. That should come out to about 4,050watts. Obviously, the coax is not going to handle that for heat dissipation reasons, but high SWR and arcing isn’t going to be the coax killer. The loss of this cable at 2m googles to around 14dB per 100’. This means if you put 65w through 100 feet of this cable, you would have about 2.5w make it to the other end in a perfectly matched system. The other 62.5w goes toward heating the coax. With that much loss, you wouldn’t even get a decent swr reading at the input end as the reflected wave encounters the same loss on the return trip. Summary: That...
    3 replies | 223 view(s)
  • KD9KVS's Avatar
    Thu 17th Oct 2019, 13:25
    KD9KVS replied to a thread Hello everyone. in Introduce yourself
    Welcome to the hobby! These are some great questions you have, and the answer to them is, it all depends. Probably not what you wanted to hear, but there are many variables that play into being able to hit the repeater. One of the biggest is the antenna. Height, feedline, resonant frequencies, line of site and things of that sort. That applies to the repeater as well as your radio. I have easily hit a repeater with an 8 watt ht from greater than 10 miles away, but I had a magnamount antenna on top of my vehicle, creating an excellent ground plane. The nagoya ut-72 is a great antenna that handles 80+- watts, and comes with an adapter for ht's. A 25 watt mobile unit (qyt 8900d is what I have) got me into the repeater 20+ miles out. Again this will depend on antenna line of site and other things I mentioned earlier. Also check out the qyt 980+, that's 75 watts and does an amazing job. I use both of these models mobile and do not have problems. 8 watts is what I started with and had no problems, but it...
    1 replies | 128 view(s)
  • normd's Avatar
    Thu 17th Oct 2019, 10:46
    normd replied to a thread Interference in Activity Forum
    Sounds like you have RF on your outer braid of your coax, If you put a 1:1 current choke balun near to your g5rv it should solve it. It did for me. There is loads of info online on building one but I bought one of these https://www.m0cvoantennas.com/apps/webstore/products/show/2628660
    1 replies | 1102 view(s)
  • normd's Avatar
    Thu 17th Oct 2019, 08:14
    Thanks for all the advice guys tbh I didn't know it was usual on 40 although I also have it on 30 & 20 as well but the attenuator does work. I have an ft450d as well so it's nice to know it isn't my setup and we're all in the same boat. Here's to my lucky day :-)
    8 replies | 333 view(s)
  • 5B4AJB's Avatar
    Thu 17th Oct 2019, 00:43
    When your SWR goes high, you will find out :D
    3 replies | 223 view(s)
  • AmazonJoe's Avatar
    Wed 16th Oct 2019, 23:40
    Hello! Hey everyone, I'm new to the hobby and currently studying for my technician and general exam. I do have a few questions that I hope you all can help me with. I live out in the boonies surrounded by rolling hills and very tall pine trees. I did a search for repeaters in my area and the closest one is 10 miles away from where I live. I know you guys always recommend going to my local area Ham Radio Club but its over and 1 1/2 hour drive from where I live. From what I have read it would seem that the only way for me to be able to transmit and receive would be with a HF base station? So my questions are: 1. Is that the only way? 2. And if so how do I go about doing that, equipment needed etc... PS. I programmed a Baofeng FH-FH8P using chirp and bought a named brand Nagoya antenna and I get nothing at all. I hope you all can help me as I'm loving this hobby more and more everyday.
    1 replies | 128 view(s)
  • cwidell's Avatar
    Wed 16th Oct 2019, 21:34
    cwidell started a thread Base Radios Problem with Monitor tone on FT-1000 in Yaesu
    Problem with Monitor tone on FT-1000 Monitor tone is constantlly on the radio. The level can be adjusted to zero by turning the monitor control fully anticlockvise. I can not turn the tone off using the MONI button. Is this a correct function?? Reading the manual: The monitor control adjusts the audio volume of CW sidetone and transmit RF monitor during transmission, when activated by the gray button with the same name. MONI gray button. Enables the transmit (RF) monitor in all modes (except CW, in which the onitor function is always on to produce the sidetone. 73 de SM3EQF Christer
    0 replies | 95 view(s)
  • owenb_'s Avatar
    Wed 16th Oct 2019, 18:14
    The specs for the cable seem to indicate that it is but a buddy of mine says I should be using RG58. Any thoughts?
    3 replies | 223 view(s)
  • KD9KVS's Avatar
    Wed 16th Oct 2019, 13:26
    You are welcome, good day and God bless, 73s for now. Sent from my SM-S767VL using Tapatalk
    13 replies | 400 view(s)
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