1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Amateur (Ham) Radio BS and Callsign Thread!

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

  1. Mar 15, 2021 at 2:12 PM
    #8601
    Baby

    Baby Well-Known Member

    Joined:
    Nov 23, 2009
    Member:
    #26409
    Messages:
    71
    Gender:
    Male
    Northern, CA
    Vehicle:
    03 Tacoma 3.4
    Wondering if any of you guys can point me in the right direction chasing a decent SWR. I have a newly installed Larsen NMO2/70B mounted on a ditch light bracket on the driver-side hood hinge. Braided ground strap maybe 8" in length runs from a hood hinge bolt to the fender. The radio is 2m only. All of this is new, never been set up before.

    SWR is way into the red on the meter--like 5.5:1. At 144Mhz it is slightly lower than it is when at 146Mhz. Based on the length = (constant) divided by frequency: l = x/f formula for middle of the band, I think the length of the antenna should be 38.5 inches. The length out of the box is 31.75 inches, but that doesn't account for the antenna coil.

    Any ideas about first steps? I've half a mind to cut off a quarter inch and see what happens, but I hate just guessing.
     
  2. Mar 15, 2021 at 2:23 PM
    #8602
    golfindia

    golfindia Well-Known Member

    Joined:
    Aug 25, 2017
    Member:
    #228000
    Messages:
    1,230
    Gender:
    Male
    Yes.
    Vehicle:
    2017 4x4 access cab AT
    What are you using to measure SWR? The formula isn't applicable with a loading coil. Have you tried transmitting with it? If your rig doesn't fold back power I wouldn't worry about what the swr is.
     
    Baby likes this.
  3. Mar 15, 2021 at 2:25 PM
    #8603
    BenMara

    BenMara That Asian RedNeck

    Joined:
    Apr 14, 2011
    Member:
    #54903
    Messages:
    1,683
    Gender:
    Male
    First Name:
    Ben
    Duck's Ditch, SC
    Vehicle:
    2011 DCSB 4x4 SCed
    TRD Blower, Ham Radio, DBA T2 Rotors
    Antenna from the factory should be below 2.0 on 2m. I would check the Coax and find someone local with an antenna analyzer.
     
    Baby likes this.
  4. Mar 15, 2021 at 2:52 PM
    #8604
    Baby

    Baby Well-Known Member

    Joined:
    Nov 23, 2009
    Member:
    #26409
    Messages:
    71
    Gender:
    Male
    Northern, CA
    Vehicle:
    03 Tacoma 3.4
    Thanks for the info, guys. I'm using this old para thing. When I have transmitted others report I'm all static.
    [​IMG]
     
  5. Mar 15, 2021 at 2:56 PM
    #8605
    golfindia

    golfindia Well-Known Member

    Joined:
    Aug 25, 2017
    Member:
    #228000
    Messages:
    1,230
    Gender:
    Male
    Yes.
    Vehicle:
    2017 4x4 access cab AT
    That's for CBs, HF frequency.... I don't even think I'd trust it for that.

    I Definitely wouldn't tune my VHF antenna based on readings from it.
     
    GarlicFarts and Baby like this.
  6. Mar 15, 2021 at 2:59 PM
    #8606
    Baby

    Baby Well-Known Member

    Joined:
    Nov 23, 2009
    Member:
    #26409
    Messages:
    71
    Gender:
    Male
    Northern, CA
    Vehicle:
    03 Tacoma 3.4
    OK, I was under the impression that it was good for vhf as well. I will look for something better or try to find someone with gear to come out here. Thanks again, I appreciate the knowledge.
     
  7. Mar 15, 2021 at 3:13 PM
    #8607
    GoodDogRUGER

    GoodDogRUGER 2021 SR ACCESS V6 4x4

    Joined:
    Feb 18, 2021
    Member:
    #356618
    Messages:
    63
    Gender:
    Male
    First Name:
    Heath
    SOCAL
    Vehicle:
    2021 SR Access Cab V6 4x4
    6112/5160, 285/75/17 BFG KO2 , SPC, Method 703s, BMC/CMC, ARE DCU,
    Pretty new TW member here. My Grandpa-in-law was a Ham. He wanted me to like it but my interests were way more high speed than that. After he was long gone I calmed down enough to like the radio stuff. If I was interested in it, he would have given me his whole shack. It consisted of about 20 pieces of Collins. Very nice and top of the line back in the day and still in perfect condition. He used it all up until he was in his 80s. If I had only known.... I am only a tech but have logged lots of contacts on 10M back when it was hot and I lived in OH. Now I am an OH call in CA. Not near as much 2m here as there was there. Kenwood TS590 HF with a wire and a couple different 2m radios is my shack. Kilo Delta Eight Whisky Tango Quebec. 73
     
    joshuajayg, BenMara and GarlicFarts like this.
  8. Mar 15, 2021 at 5:52 PM
    #8608
    BenMara

    BenMara That Asian RedNeck

    Joined:
    Apr 14, 2011
    Member:
    #54903
    Messages:
    1,683
    Gender:
    Male
    First Name:
    Ben
    Duck's Ditch, SC
    Vehicle:
    2011 DCSB 4x4 SCed
    TRD Blower, Ham Radio, DBA T2 Rotors
    I miss my D710.
    I looked at those Spiderbeams when i was researching for my Hexbeam.
    True on just transmit.

    When its Bad or Poor, i get covered up by the big stations in the 80m DX window.
     
  9. Mar 21, 2021 at 3:00 PM
    #8609
    Baby

    Baby Well-Known Member

    Joined:
    Nov 23, 2009
    Member:
    #26409
    Messages:
    71
    Gender:
    Male
    Northern, CA
    Vehicle:
    03 Tacoma 3.4
    The VNA analyzer says 7+. I checked continuity from the mount, antenna, coax, etc. For insurance I removed the mount and sanded more powder coating and paint off of all mounting surfaces of the mount and trunk hinge. Great continuity everywhere. Same results with the SWR. I didn't know a number that high was possible.
     
  10. Mar 21, 2021 at 5:10 PM
    #8610
    BenMara

    BenMara That Asian RedNeck

    Joined:
    Apr 14, 2011
    Member:
    #54903
    Messages:
    1,683
    Gender:
    Male
    First Name:
    Ben
    Duck's Ditch, SC
    Vehicle:
    2011 DCSB 4x4 SCed
    TRD Blower, Ham Radio, DBA T2 Rotors
    replace the coax ends, then the coax. look for changes.
     
    Baby likes this.
  11. Mar 21, 2021 at 5:48 PM
    #8611
    Baby

    Baby Well-Known Member

    Joined:
    Nov 23, 2009
    Member:
    #26409
    Messages:
    71
    Gender:
    Male
    Northern, CA
    Vehicle:
    03 Tacoma 3.4
    Thanks! Question—this cable was made by antenna farm. Think I should order another or put one together myself? Or do you mean just replace the ends on this cable?
     
  12. Mar 21, 2021 at 5:52 PM
    #8612
    BenMara

    BenMara That Asian RedNeck

    Joined:
    Apr 14, 2011
    Member:
    #54903
    Messages:
    1,683
    Gender:
    Male
    First Name:
    Ben
    Duck's Ditch, SC
    Vehicle:
    2011 DCSB 4x4 SCed
    TRD Blower, Ham Radio, DBA T2 Rotors
    take the antenna off NMO mount, disconnect coax from radio. Use VOM see if there is short. If you can find someone that has one, use a merger. It shoots High Voltage to looks for leaks. Test the antenna on a different NMO mount?
     
    Baby likes this.
  13. Mar 21, 2021 at 6:12 PM
    #8613
    Baby

    Baby Well-Known Member

    Joined:
    Nov 23, 2009
    Member:
    #26409
    Messages:
    71
    Gender:
    Male
    Northern, CA
    Vehicle:
    03 Tacoma 3.4
    Got it. Thanks a ton!
     
  14. Mar 21, 2021 at 8:06 PM
    #8614
    joshuajayg

    joshuajayg Well-Known Member

    Joined:
    Dec 16, 2019
    Member:
    #313511
    Messages:
    412
    Gender:
    Male
    Moab
    Vehicle:
    2020 TRD Off-Road MT
    D
    I just want to make sure... did you calibrate the VNA with the included calibration caps for the specific frequency range you are testing?
     
  15. Mar 21, 2021 at 8:47 PM
    #8615
    Baby

    Baby Well-Known Member

    Joined:
    Nov 23, 2009
    Member:
    #26409
    Messages:
    71
    Gender:
    Male
    Northern, CA
    Vehicle:
    03 Tacoma 3.4
    Yes, I calibrated with the three caps and set the range to 144-148 MHz.
     
    joshuajayg likes this.
  16. Mar 22, 2021 at 12:37 PM
    #8616
    iK0NiK

    iK0NiK Insert custom title here.

    Joined:
    Jul 31, 2015
    Member:
    #160743
    Messages:
    1,656
    Gender:
    Male
    First Name:
    West
    Columbus, GA
    Vehicle:
    2015 DCSB V6 TRDOR 4WD
    Bil 6112/5160's etc.
    Question for you guys.

    I'm gearing up for a POTA setup. Got a Yaesu 891 inbound. Already have the antenna situation covered. My only thing left to sort is power.

    I know BioEnno is all of the rage but I'm looking at something that operates as more of a dual purpose camp power & portable power setup.

    Any thoughts on how long something like the Jackery 300W would last?
    https://www.amazon.com/Jackery-Portable-Explorer-Generator-Optional/dp/B082TMBYR6

    According to documentation it's a roughly 20.4Ah battery. So If I combine with a small 25A switching power supply I should get a few good hours operating time out of it, right? I'm thinking of only running between 50-75w portable.

    Any thoughts?
     
  17. Mar 22, 2021 at 1:06 PM
    #8617
    golfindia

    golfindia Well-Known Member

    Joined:
    Aug 25, 2017
    Member:
    #228000
    Messages:
    1,230
    Gender:
    Male
    Yes.
    Vehicle:
    2017 4x4 access cab AT
    You'll burn through a large portion of the battery capacity using the inverter to run a PS, both introduce inefficiencies. The power may also get pretty dirty if the inverter wave form is too square or pack voltage sags on xmit.

    Those power packs are sub optimal for ham radio because they are stepped down from 21V (which is why they're so cheap). The cigarette plug is probably only 12v, not 13.8. The cigarette plug current is also limited by the step down circuitry. A cheap car battery with one solar panel would probably last longer.
     
    Chipskip and iK0NiK like this.
  18. Mar 22, 2021 at 1:18 PM
    #8618
    Taco_Josh

    Taco_Josh Member

    Joined:
    Sep 20, 2020
    Member:
    #341377
    Messages:
    14
    Gender:
    Male
    First Name:
    Josh
    Vehicle:
    2020 GMG TRD OR
    Hi all, I'm kind of a newb when it comes to HAM. I've had my tech license for a couple years now but haven't really delved into the HAM world. I've got a cheap Baofeng UV-5R that I play around with occasionally, but I seldom find anyone else on any local repeaters. Other than tracking down a local HAM club, any advice on making new contacts?

    Callsign - KM4-YAP
     
    Chipskip and NotRed like this.
  19. Mar 22, 2021 at 1:28 PM
    #8619
    golfindia

    golfindia Well-Known Member

    Joined:
    Aug 25, 2017
    Member:
    #228000
    Messages:
    1,230
    Gender:
    Male
    Yes.
    Vehicle:
    2017 4x4 access cab AT
    DMR

    Wave of the future......
     
  20. Mar 22, 2021 at 5:24 PM
    #8620
    foy1der

    foy1der Well-Known Member

    Joined:
    Sep 18, 2016
    Member:
    #197597
    Messages:
    546
    Gender:
    Male
    First Name:
    W1FOY
    Vehicle:
    2017 OR DCLB
    I echo what @golfindia said. There is no reason to run with a power supply. If you want something plug and play, look into the powerwerx stuff. The make battery boxes and they use bioenno batteries.
     
    iK0NiK and golfindia like this.

Products Discussed in

To Top