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Amateur (Ham) Radio BS and Callsign Thread!

Discussion in 'Sports, Hobbies & Interests' started by The Traveler, Jan 29, 2013.

  1. Aug 21, 2013 at 9:27 AM
    #301
    Crom

    Crom Time is precious; use it wisely

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    Many, see build thread.
    Yeah that may be it. Some of the links could be overly compressed. As it turns out I stumbled upon a net they were having and I listened in on one of the 220 mHz repeaters and it sounded wonderful, when I tuned into the 440 machine it was compressed, back to the 220 machine and it sounded much better! :) A very nice system they have--no doubt, I just wouldn't want to listen to compressed audio for too long a time. :)
     
  2. Aug 22, 2013 at 4:10 AM
    #302
    maineah

    maineah Well-Known Member

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    It's not so much that it's compressed it's just narrow band FM. If you look at a FM signal you'll see it has multiple side bands the narrower the deviation the closer the side bands too much audio will also cause distortion so shouting into an HT or mike figuring you'll be heard is actually making it worst.
     
  3. Sep 30, 2013 at 1:31 PM
    #303
    DDD

    DDD Shine bright like a hymen

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    Derek
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    Looking for antenna recommendations.

    136 - 174 MHz
    100 Watts or more max power
    1/4 wave (total height between 18" - 29" or so)
    NMO mount
    Spring would be nice but not mandatory

    Thanks in advance.
     
  4. Sep 30, 2013 at 1:44 PM
    #304
    MonkeyProof

    MonkeyProof Power Top

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  5. Oct 1, 2013 at 4:41 AM
    #305
    maineah

    maineah Well-Known Member

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    Just about any 2 meter will receive 136-174 and TX inside the ham band. Don’t think anything out there will do a 100 watts off the shelf most I have seen are more like 70 watts max most are 50 watt. 19 1/2" is a 1/4 wave 2 meter antenna very flexible no spring needed if you add a spring you'll have to cut the antenna shorter makes a big difference at 2 meters.
     
  6. Oct 1, 2013 at 11:43 AM
    #306
    Desert Drifter

    Desert Drifter Well-Known Member

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    New Ham here, about 6 months. I bought a Kenwood TM-V71A radio and a decent Comet base antenna and have it set up in the home with a 13.8 Volt power supply, works great! I do want to get a mobile radio (or move my V71A into the Tacoma). A couple questions I have are....

    1) If I go with a 2M only mobile rig will I regret not having the 440MHz band? At home I hear plenty of chit-chat on UHF, but more on 2M.

    2) If I move my Kenwood dual bander into the Tacoma, I then want a new base radio and will have my General Class license soon. If I buy a single base radio that has HF and the 2M & 440 are they decent on all bands? Or is it best to have a dedicated HF rig with a second radio for 2M and 440? I realize an "ultimate shack" has many radion, but I tend to blow my money on other hobbies, so Ham dollars take away from other interests...

    All opinions appreciated!

    KG7DDR
     
  7. Oct 1, 2013 at 11:46 AM
    #307
    Crom

    Crom Time is precious; use it wisely

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    Just so you know power isn't all that important. Doubling power does not double the range. Doubling power only gets you +3dB on the receiving end. For example I can talk to Los Angeles from San Diego with 10W on my mobile rig which can do 50W. Why use 50W when 10W will do just fine? For around town I use 5W on all the local repeaters and it works just fine.

    Here are some recommendations:

    I've heard very good things about the flexi-whip antenna (150 Watt) from reputable members on EXPO.

    I personally like Larsen antennas for their quality. Here is a complete catalog.

    Not sure which antenna you have for middle of nowhere, but I assume it's one of the longer ones. If so, the difference of course will be the effective radiated pattern. For the long explanation click here. Here is the short visual version see this diagram:

    [​IMG]

    You talking to helicopters or you in the bottom of a slot canyon? The 1/4 wave is best for that (radiating up). For talking across vast flat distances like the desert, the 5/8 wave will be best.

    It really depends on the manufacturer. For example, the NMO Larsen antennas are all rated between 100-200 watts. A vast majority of Comtelco NMO antennas are good for 200 Watts, The Diamond and Comet line vary widely depending on model.
     
    Last edited: Oct 1, 2013
  8. Oct 1, 2013 at 11:54 AM
    #308
    SoCaltaco65

    SoCaltaco65 Well-Known Member

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  9. Oct 1, 2013 at 1:04 PM
    #309
    Crom

    Crom Time is precious; use it wisely

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    Many, see build thread.
    ^ Laird makes some top-notch antennas. :thumbsup: The California Highway Patrol uses a variety of them.
     
  10. Oct 1, 2013 at 1:14 PM
    #310
    MonkeyProof

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    So according to the Larsen catalog , when I stuck my 5/8 wave on my mag mount which was then mounted on a empty paint can attacehed to a broom stick was a bad idea. Instead I should have used a 1/2 wave antenna :facepalm:


    You can see part of it here attached to the Ez up canopy
    [​IMG]

    My mobile base station for desert racing. for remote pit areas :cool:
    [​IMG]
     
  11. Oct 1, 2013 at 1:17 PM
    #311
    SoCaltaco65

    SoCaltaco65 Well-Known Member

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  12. Oct 1, 2013 at 1:53 PM
    #312
    DDD

    DDD Shine bright like a hymen

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  13. Oct 1, 2013 at 1:55 PM
    #313
    SoCaltaco65

    SoCaltaco65 Well-Known Member

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    good antenna, very broadband as well.
     
  14. Oct 1, 2013 at 1:58 PM
    #314
    SoCaltaco65

    SoCaltaco65 Well-Known Member

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  15. Oct 1, 2013 at 2:10 PM
    #315
    Btnewman

    Btnewman Benjamin Newman

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    Hey guys! A frirnd here gave me his ham study so I can start studying up and get my ham license. I am pretty excited to learn this stuff so I can at least partially understand the stuff you guys talk about on here!
     
  16. Oct 1, 2013 at 2:18 PM
    #316
    MonkeyProof

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    Nice! The exam is stupid easy to pass with a minimum amount of studying. Good luck when you get around to taking it.
     
  17. Oct 1, 2013 at 4:02 PM
    #317
    jeverich

    jeverich Well-Known Member

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    Anyone up for a QSO in the near future? Maritime mobile up here in Kodiak; BS'ing trough the local IRLP node while we're waiting to deliver our fish.. Etc.

    We are on a trip right now, should be in late tonight or tomorrow..

    Jake

    KG7DVI
     
  18. Oct 2, 2013 at 4:44 AM
    #318
    maineah

    maineah Well-Known Member

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    Start working on that general class maritime mobile is a lot of fun just call CQ and you'll have more QSO's then you can handle!
     
  19. Oct 2, 2013 at 5:12 AM
    #319
    maineah

    maineah Well-Known Member

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    The radio not the antenna. For years I used land mobile re-tuned radios they would do a 100 watts but most of the ham stuff is only 50 watts more so because of the PA cooling, the heat sinks take up a lot of room people want small and you can't have power with out cooling. My old Micor weight 25#! As far as an antennas a 5/8's is a good choice it at least has some gain. I think many people missed the part about "using the least amount of power to communicate effectively" There are two repeaters on top of Mt Washington 29 miles from my house I have no problem with a rubber duck and 5 watts why would I need 50 watts and a gain antenna in the truck to do the same thing? QRP works for thousands of miles!
     
  20. Oct 2, 2013 at 8:02 AM
    #320
    SoCaltaco65

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    I have to agree 100%, I run 5 watts in the truck most of the time, 6,144 and 440 most of the time I never have an issue hitting repeaters, even the open desert I never really run anything over 10watts. I was just commenting the other day to a local that I could hear on the input of a local repeater from my HT while he was 20 miles away, I think folks are just lazy.
     
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