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  • Joevano's Avatar
    Yesterday, 21:14
    Joevano started a thread FTM-3100R fan question in Yaesu
    I have on of these in my vehicle and now want a 2m radio for my shack. My first choice for the shack would be the same radio but I'm concerned about the fan noise. Is there any firmware update or way to reduce the time that the fan runs?
    0 replies | 59 view(s)
  • Joevano's Avatar
    Yesterday, 21:01
    If you have one of these, I'm curious about the scan speed. I've read a review that stated the scan was very slow. I plan on programming in 10-12 repeaters and scan just them. Is that going to be slow? Or, is it only when scanning the entire band that the scan is slow.
    0 replies | 45 view(s)
  • brandon lind's Avatar
    Yesterday, 13:24
    Homebrewing is a great option for linear supplies if you have the money and the time. I personally like the 2N3055's. If you order extra, those make great audio amplifiers too!
    6 replies | 428 view(s)
  • brandon lind's Avatar
    Yesterday, 13:20
    Both of us started with a spring but took them off. These antennas are so heavy that they get to swinging around a ridiculous amount using the springs that came with them. I am sure there are stronger springs online, but I like the amount of bend mine has at 70MPH and havent had trouble yet. I can grab the whip and bend it all the way down to the tailgate without it pulling the magnets off mine, my friend can do the same with his rigid mount. I added a rope to mine so if it ever snaps the hardware, the whip isnt going into the car behind me. We are happy with them the way they are ~ works too good to change.
    3 replies | 113 view(s)
  • gnuuser's Avatar
    Yesterday, 00:38
    adding a spring to the base of the whip also helps prevent damage. although the whip may sway a bit more, it doens't affect performance very much
    3 replies | 113 view(s)
  • gnuuser's Avatar
    Yesterday, 00:36
    linear power supplies can be purchased or they can be home brewed! It depends on how much involved you want to be! Home-brewing is part of being a ham because you learn as you go. you can spend time learning things or you can just throw money at things that is a choice each person make themselves. a lot depends on a persons age also and the amount of free time the want to allot to their hobbies. ( or how much the wifey lets them alone):adoration: thankfully my wife is ok with ham radio cause it keeps me at home more often!
    6 replies | 428 view(s)
  • DanielW999's Avatar
    Wed 28th Oct 2020, 23:41
    DanielW999 replied to a thread ground rods in Amateur Radios
    Yes, it is confusing, but I understand a little bit more about it now. I will run a ground wire to the A/C entrance that connects my shack ground wire and my antenna grounds. I realize that this won't protect my equipment from lightning, but it will help protect people in my house from shocks due to surges from nearby lightning strikes, and I will be in NEC compliance. Thanks for the info!
    15 replies | 922 view(s)
  • PoulKlien's Avatar
    Wed 28th Oct 2020, 12:23
    Oh ... thank you very much :encouragement: ! I will try to do it.
    2 replies | 107 view(s)
  • brandon lind's Avatar
    Tue 27th Oct 2020, 23:07
    Update: I know this thread is old but I finally found the original source code for this on a failing hard drive I had tossed in a drawer. The entire visual studio project folder is here for the security conscious: https://drive.google.com/file/d/1uBlu8Ligo8uGAGQNPUVnpkAtjcmSxmxt/view?usp=sharing
    3 replies | 1705 view(s)
  • brandon lind's Avatar
    Tue 27th Oct 2020, 22:01
    Thanks for the reply. If it was in response to my former question, the antenna is already installed. It is 102" mounted on a piece of flat stock designed to attach between the roof rack rails of a trail blazer and is centered on the roof with a ground strap to the roof sheet metal directly below. It took a little matching at the feed to make it like 10m, but it is working great. He hits a few low lines here and there, typically cable tv coax rigid line, but no damage has yet to occur to either as this only occurs in side alleys while driving very slow. As for law enforcement, they are ham friendly and he has his call sign on his license plate. No issue there.
    3 replies | 113 view(s)
  • gnuuser's Avatar
    Tue 27th Oct 2020, 20:53
    responding to a closed thread! Here in the US. minimum line heights are standard at 18 feet. so its unusual you will hit a line unless it has come loose from the pole. the major issue you may face is low bridges and overhangs on buildings. these are usually 13 foot 6 inches on many commercial buildings like mcdonalds. Im not sure there is a legal limit on height but an overly high antenna may attract the attention of the local police. and may invite unintentional damage to your antenna or vehicle from unexpected low hanging obstructions. performance wise depending on the type of antenna you want at least 2/3 of the antenna height above the cab and away from luggage racks. for example my k3 magnetic mount on the ford windstar needs to be directly in the center of the roof!
    3 replies | 113 view(s)
  • brandon lind's Avatar
    Tue 27th Oct 2020, 17:28
    I don't know much at all about this but I've tried something similar myself with no luck. The first answer on this link is the reason I have come to accept. https://stackoverflow.com/questions/2849682/monitor-a-com-port-already-in-use However, further down that page is a method that has worked for me. Use a separate port to listen to the traffic, that way there is only one program talking to each port. If you use these UART USB things (which are easy to set up in C# to TX/RX ASCII, should be easy. I've just stumbled on these things so I'm not too good at using them yet (or c# lol), you may need two of them to Rx the traffic from both devices as they talk to each other. Just splice in to the data streams with another RX device. if you wanna drop a few bucks on a new toy, I can tell you that Picoscope brand oscilloscopes have a digital decoder option that literally prints the decoded information in the waveform on the screen as it is being received/decoded. Here is a screenshot of what mine can decode.
    2 replies | 107 view(s)
  • PoulKlien's Avatar
    Tue 27th Oct 2020, 10:05
    I have a serial device, an AVRT5 APRS amateur radio GPRS tracker. It is made in China and poorly documented although there is a very active user community on a Yahoo group. https://groups.yahoo.com/neo/groups/AP5 ... s/messages To configure this device there is a Windows program written it seems in visual basic that simply sends and reads the configuration by serial port. The device comes with a Prolific USB serial converter. The software was no more difficult to run under Wine than Windows (both needed downloading DLL and OCX files and registering them). The difficulty came when I tried to reverse engineer the configuration protocol. Under Linux ordinarily, that would be easy. I tried all the usual tools and some unusual ones too. Here are some examples socat strace slsnif https://linux.die.net/man/1/slsnif jpnevulator, http://jpnevulator.snarl.nl/
    2 replies | 107 view(s)
  • gnuuser's Avatar
    Mon 26th Oct 2020, 23:22
    recieved my kit for the QRPlabs qcx radio. (40 meter) assembled it in an evening and had a small issue with it. solder points are small so you have to be careful soldering it. one pin on lcd display did not solder well and display was dark. anyhow inspected with powerful magnification and found solder joint had broken. Re-flowed solder and all is good. its best advised if you are going to work on a kit like this to inspect it from all angles with a lighted magnifier while pressing gently on components. this will expose any faulty solder joints quickly. Me eyes are fairly good but i used a 12 power jewelers loupe Its a great little radio! calibration was fairly easy and the decoder responds rapidly.
    0 replies | 122 view(s)
  • gnuuser's Avatar
    Mon 26th Oct 2020, 23:09
    gnuuser replied to a thread ground rods in Amateur Radios
    good point and info! as a commercial electrician I have often performed earth resistance tests in preparation for installing ground electrodes. although its been said its not related to radio it actually is important. while having a ground rod is important you must have a low enough resistance to be safe electrically. bonding any metal object be it a tower, radiator, metal water pipe (any metal object that you may come in contact to) brings all theses thing to an equal potential. and yes there can be a lot of electrical potential difference in buried metal objects even a few feet apart depending on soil composition and its moisture content even in the chemical composition of the metal! (prime example: zinc coated nail and a piece of copper wire stuck into a potato or orange) ( you have a battery)
    15 replies | 922 view(s)
  • 2E0FVL's Avatar
    Sun 25th Oct 2020, 09:32
    2E0FVL replied to a thread Dan O. [N0BAF] in Introduce yourself
    Dan, try here - https://www.hamradioforum.net/forums/88-Username-Changes
    1 replies | 110 view(s)
  • M7NYH's Avatar
    Sat 24th Oct 2020, 22:43
    why do you want a time in class requirement ? especially given that historically there was only a full licence and the band restrictiosn were hinged around the international agreement ref Morse and HF
    22 replies | 6143 view(s)
  • M7NYH's Avatar
    Sat 24th Oct 2020, 22:40
    1. UK question bank is confidential and if questions are known to be leaked they are removed from the question bank fr a number of years if not forever, 2. What is the objective justification for that action - especially given that internationally for many years there was only one licence the difference between class A and Class B was that you had passed a Morse test and therefore had access to HF while there was the international requirement to know Morse to work on HF bands. 3. this is directly counter to the international direction of travel where the restrictions on the 'lower' licences are power and /or equipment based rather than the hard to justify where Amateur is the primary service on a band restrictions - again what is your objective justification for this ? 4. baseless, discriminatory and makes the hobby the preserve of older , well off people ... and ignoring that a hell of lot of the operation on those services uses RF at one or both ends...
    22 replies | 6143 view(s)
  • M7NYH's Avatar
    Sat 24th Oct 2020, 22:13
    Where in the world are you please ? As your assertions do not measure up to the UK foundation exam and while the UK Intermediate and Full licences include significant electronics theory content it also reflects the freedom that the Inter / Full licensee has to tinker with their equipment. and while many / most hams purchase radios , they may well build / modify / rig their own accessories, station set -up / shack and antennas - generally if a technically assigned business radio user has base stations and /or repeaters etc they will have a management contract with a professional business radio supplier / installer , where as even as an M7 with only a few months of licence holding under my belt i've built antennae, organised the works and done the technical parts ( but not the actual on the roof work to put the pole and anchors onto the chimney ) of putting a 2m /70cm colinear on the chimney of my home ...
    22 replies | 6143 view(s)
  • N9ZYE's Avatar
    Sat 24th Oct 2020, 22:11
    Greetings, I have been a member here from years ago but not been active for a long time. The wife and I purchased a 2010 Jeep Wrangler recently and I am looking into installing a 2M/ 440 mobile unit. Thinking maybe we will get involved into some trail rides where the radio would be useful. Any recommendations on a radio with remote head mounting capability? Thanks
    0 replies | 82 view(s)
  • Dan O.'s Avatar
    Sat 24th Oct 2020, 19:43
    Dan O. replied to a thread ground rods in Amateur Radios
    Grounding advice is often confusing because there are many grounding requirements and it can be difficult to meet them all at the same time. The primary requirements for grounding are: Electrical service safety Lightning protection Static charge dissipation RF counterpoise And probably more.
    15 replies | 922 view(s)
  • Dan O.'s Avatar
    Sat 24th Oct 2020, 16:38
    Hello, I am Dan O. from northern Colorado (same grid as WWV). Just chillin’ and waiting for the smoke to clear. Btw, is there a way to change my user name once registered? I had intended to put my call in there but forgot.
    1 replies | 110 view(s)
  • K4CQO's Avatar
    Sat 24th Oct 2020, 15:56
    Without a DMR ID / license, the only way to listen is to find a repeater that has a static TG. All other TGs require a PTT operation to be able to listen to the channel. You have to do some research to find the repeaters in your area (the RepeaterBook app on a spart phone will bring up repeaters in your area and list the distance to them) and which TGs are static -- most likely only one. I used the acronyms purposely to give you some incentive to learn about DMR -- hope that I didn't cause you too much "pain" doing so, but it takes a while to get an understanding of the terms ... so good luck, and DMR is a good way to open up the world.
    1 replies | 176 view(s)
  • DanielW999's Avatar
    Sat 24th Oct 2020, 04:17
    Yes, I recently got the HackRF One. Just starting to learn how to use it by watching the tutorial videos. I've been a ham since the 90s, but SDR is new to me. Look for some deals on ebay.
    4 replies | 198 view(s)
  • Big Daddy63's Avatar
    Fri 23rd Oct 2020, 22:01
    Well, I was hoping to have took my test this week, but my 16 yr old had a date with a girl who brought along Covid-19 as a 3rd wheel. He's ok, but the family is locked down until further notice. Anyway, it gives me time to try to figure out something I'm having problems wrapping my head around...DMR. I've pretty much figured a out Analog on my uv5r and uv82. But now, I have a Anytone at878uv, and to be honest, this DMR is a whole new ballgame. The biggest issue is that I'm trying to listen in on some digital transmissions, but I'm not having any luck setting up the ht to listen. Now I know I need a digital id (and a license to get that) to do any serious operations. But for right now, Id like to listen like I do on analog. So, if anyone knows of a website, video, or anything else that can help me set up my ht for just listening, (or any advice) I've got a couple weeks to kill. Thanks.
    1 replies | 176 view(s)
  • brandon lind's Avatar
    Fri 23rd Oct 2020, 21:48
    I'll be adding the skywave linux ISO to my usb stick. I have a 256GB thumb drive partitioned into two 128GB parts, one NTFS and the other Ext4. I have Easy2Boot on the NTFS partition with all my essential ISO images which works really nice. I have both the win7 and win10 installers and a few linux iso's on there. I think I have mint 18 something, one of the chirp iso's and some linux server one ive never tried. Ill be adding it to that. Its really nice having a menu to choose iso's from pre-boot. That Ext4 partition is what I use to save things to and install necessary packages from when Im running a non-persistent iso, works great! Did you get the HackRF One? I've been itching to get my hands on one, just cannot afford it right now. Let me know how you like it when you get it figured out!
    4 replies | 198 view(s)
  • DanielW999's Avatar
    Fri 23rd Oct 2020, 18:31
    You can only install it as a Live User system that is read only. There is no option for a full install. I don't understand why it is set up that way, but you can install it as a persistent drive. Let me know if you have any problems or questions and I'll try to help. I'm new to SDR and just bought the HackRF hardware.
    4 replies | 198 view(s)
  • brandon lind's Avatar
    Fri 23rd Oct 2020, 18:18
    Does anyone know the programming protocols Motorola used on the old SM50 and GM300 radios? I ordered some of those USB to UART modules and have been having a ton of fun making them talk to each other with a C# windows form app and was hoping someone knew the digital ins and outs of the Motorola programming interface. I have several Motorola radios and, once upon a time, I had software to program them. Every time I tried since 2005 (even on an XP machine like I used before), these radios just dont want to talk to the Motorola software. I ended up giving my cables to someone else thinking they were no longer useful to me. I later found out that the software is not backwards compatible and using an older version software to program a radio that used a newer version software, the older software no longer works. I never did find the software I had used originally and everything online seemed to not work. But now with these serial communication chips, id like to take a shot at making my own programming software ~...
    0 replies | 140 view(s)
  • brandon lind's Avatar
    Fri 23rd Oct 2020, 17:48
    downloading it now, thanks for pointing it out!
    4 replies | 198 view(s)
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