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  • K6CPO's Avatar
    Yesterday, 19:32
    K6CPO replied to a thread Need help with ft7800 in Yaesu
    The fact you've mis-named the button in you post leads me to believe you may be pressing the wrong button. The manual specifically states to press the key. Are you perhaps pressing the button by mistake? Also, keep in mind that these buttons have several functions attached to them depending on how long they are pressed. The programming procedure for the FT-7800 calls for a momentary press to write the information to a memory channel.
    1 replies | 48 view(s)
  • brandon lind's Avatar
    Yesterday, 16:33
    The bazooka balun theory... If the sleeve is connected to the shield at the end of the coax, it is acting like one side of a dipole that simply has its coax ran through the sleeve to keep it out of the way. If it was a balun, it would be connected to the outer surface of the coax shield 1/4 wave from the end. The statement "allowing the high impedance at the end of the dipole to drive the low impedance at the end of a 3/4 wave wire." I will try to explain the best I can while keeping it simple: At the end of an antenna (or the open end of a transmission line) carrying a signal, the voltage is highest at the open end. The reason for this is because, well, it’s an open circuit and there is nowhere for current to go. If the current is minimum, the voltage must be at a maximum. This happens because of waves reflecting back in such a manner to make this infinite voltage (or current for a shorted end) possible. As we get farther from the end, the ratio of voltage to current (impedance) changes. An...
    7 replies | 259 view(s)
  • camerart's Avatar
    Yesterday, 01:42
    Hi, I used this link from the Funcube developer: http://www.funcubedongle.com/?p=1425 to get it working. Thanks, C.
    6 replies | 202 view(s)
  • xArt's Avatar
    Mon 24th Jun 2019, 19:05
    Hello, The microcontroller takes a string terminated by a period, which was VK4FAST CQDX CQDX, which repeats.
    3 replies | 135 view(s)
  • KR4LU's Avatar
    Mon 24th Jun 2019, 19:01
    KR4LU started a thread Need help with ft7800 in Yaesu
    I can't setup my ft7800 to down load memory. Following the procedure in the manual, the last button to download the memory is the VHM/MWbutton. when pushed, the radio goes to --TX--, the immediately changes to ERROR. All other functions are OK. Tried Yaesu support. No help other that send it in. The reset functions only apply to memory. A microprocessor reset would probably cure it, but I don't know how to do it. The support guy didn't either. Can anyone help? Dave KR4LU
    1 replies | 48 view(s)
  • brandon lind's Avatar
    Mon 24th Jun 2019, 15:51
    Don't spend it all on a rig and antenna alone. Had I bought an antenna impedance analyzer right away, the time I would have saved.... Power supply, coax, tuner, swr/power meter with dummy load, antenna impedance analyzer, field strength meter, etc. There are a variety of stealth antennas. HF: Flagpoles, gutters, clothes lines, attic loops, camo painted wire in tree, End fed wire antenna out 2nd floor window drawn tight only when in use (at night perhaps). VHF: furnace vents, lightning rods, slot antennas cut in a tv satellite dish, coax under garage door to car mounted antenna You could always set up the radio at a friends house and operate it through the internet.
    2 replies | 169 view(s)
  • KevinJones's Avatar
    Mon 24th Jun 2019, 15:39
    (NOTE: I believe I submitted this post last Thursday. After waiting a day and not seeing it appear, I contacted the forum via [email protected] about the matter but I never received a reply of any kind. I checked again today and it still has not been approved. So I am posting it again assuming there has been some technical glitch somewhere along the way. I apologize if this is not according to your policy.) Sorry for the late response, I have been considering your answers and trying to research as much as I can before replying. Thank you very much for all your responses. I see I have probably jumped into the deep end of the pool with trying to understand antenna theory through these examples. I am a retired electronics engineer, but my work never involved RF. However the design that has been dissected in the video I believe was a fairly common approach for these "rubber ducky" style mounts on consumer wifi equipment (before blade antennas started becoming more popular, which print...
    7 replies | 259 view(s)
  • 5B4AJB's Avatar
    Mon 24th Jun 2019, 08:56
    Maybe a local club member can unload some secondhand gear onto you, it's always a good place to start. As for invisible antennas...
    2 replies | 169 view(s)
  • Vance's Avatar
    Mon 24th Jun 2019, 04:08
    KE0RRN Completed the General Test Yesterday Shopping around for a favorable HF rig, and I need an antennae that can be hidden from a VERY observant homeowners association. If you had about $1500 set aside for HF work, and a new General license to wave around, what equipment might you choose? I have my eye on the IC7300, of course, but I have been using Yeasu FT7900 for my 2m so I have some Yeasu familiarity. Thoughts? Thanks
    2 replies | 169 view(s)
  • K7KBN's Avatar
    Mon 24th Jun 2019, 00:02
    Copying the LEDs. Whoever was doing the actual sending seems to be pretty eager to get on the air. "CQ DX" gets sent several times!
    3 replies | 135 view(s)
  • brandon lind's Avatar
    Sun 23rd Jun 2019, 13:57
    It is illegal to use voice encryption (at least in the ham bands). The APX P25 Motorola radios police use are capable of encryption but they run $1k to $5k each. What radio service do you intend to use them in? And why AES specifically? In ham radio, part 97 states that you cannot use codes or ciphers to obstruct a messages meaning. One way people have went around this is to use data "compression". If a digital transmission is compressed with an unknown-to-others algorithm, it is not understandable to the casual listener and the operator can simply say he is attempting to save bandwidth. Encryption is not illegal in all cases though. Wifi, bluetooth, cellular and public service bands have obvious legitimate uses for encryption. There have even been FCC approved FRS radios with voice scrambling. Long range handhelds without repeaters? Define "long range". The best handheld radios (without external antennas) will not get you far reliably. This is what I would do: Site to site within 30 miles, just get CB...
    1 replies | 114 view(s)
  • chrisgjamskate's Avatar
    Sun 23rd Jun 2019, 05:23
    Hello all, What is the best long range two way handheld radio that offers aes encryption? I am not looking to use a repeater, only site to site. Price is no concern. Thanks, Chris
    1 replies | 114 view(s)
  • TRON's Avatar
    Sat 22nd Jun 2019, 16:52
    Thank you for straight key video. Se you again on the air. 73
    3 replies | 135 view(s)
  • xArt's Avatar
    Sat 22nd Jun 2019, 15:48
    Hi Guys :) I did an unboxing video for the current Vibroplex straight key (2019). Enjoy! https://www.youtube.com/watch?v=Pgo3ccH5NRA
    3 replies | 135 view(s)
  • G7NFP's Avatar
    Sat 22nd Jun 2019, 13:57
    I am in UK & passed the exams nearly 30yrs ago. I have a full A class licence which l studied hard to obtain. I have been out of the hobby for several yrs due to work commitments. Now retired, l have bought some new radio gear. Things have changed in several ways. Dual band radios can be bought for a few or $ from China. So l am not surprised that we have idiots playing music on the repeaters. As for the power limitations in the stages of the licences. We have people with novice licences buying radios that can transmit 100w. How many of them will stick to the maximum transmit power for the licence that they hold? Internet & cell phone technology has reduced the interest in radios to an extent. 30yrs ago you couldn't communicate with someone thousands of miles away with a device in your pocket.
    14 replies | 2217 view(s)
  • WA1MAD's Avatar
    Fri 21st Jun 2019, 20:43
    WA1MAD replied to a thread Sigma RF2000 ? in Accessories
    Found this. May be helpful...or not http://www.fixya.com/support/t9537138-need_user_manual
    7 replies | 331 view(s)
  • KD9KVS's Avatar
    Thu 20th Jun 2019, 22:22
    It will program, did you download from the radio first, then put in your desired frequencies then upload? Or is it not reading? Mine did program from chirp, do you have the latest version of chirp? Make sure the radio is powered on and prolific drivers installed. Sent from my SM-S767VL using Tapatalk
    2 replies | 156 view(s)
  • brandon lind's Avatar
    Thu 20th Jun 2019, 21:15
    My UV-5R V2+ consumes about 90mA during scan according to my bench supply. My battery is rated at 1800mAh, which means the radio should be able to run for about 1800mAh/90mA=20 hours. That number isn't far off from what I experience. If your battery is rated at 3800mAh and your radio draws what mine does, your battery SHOULD be lasting around 3800mAh/90mA= 42 hours. I would say your battery is toast if it only lasts 20 minutes.
    1 replies | 118 view(s)
  • KevinJones's Avatar
    Thu 20th Jun 2019, 15:08
    Sorry for the late response, I have been considering your answers and trying to research as much as I can before replying. Thank you very much for all your responses. I see I have probably jumped into the deep end of the pool with trying to understand antenna theory through these examples. I am a retired electronics engineer, but my work never involved RF. However the design that has been dissected in the video I believe was a fairly common approach for these "rubber ducky" style mounts on consumer wifi equipment (before blade antennas started becoming more popular, which print the elements on a PC card.) I am assuming the industry used this design as a way to achieve the desired directivity/gain in the shortest length possible. To simply create a balanced dipole with identical, thus inherently balanced elements, and use > 1/2λ designs to achieve higher directivity/gain, would quickly become impractical even at 2.4GHz. Jeff, regarding your suggestion that the sleeve may be a balun, which off-hand...
    7 replies | 259 view(s)
  • M0TZO's Avatar
    Thu 20th Jun 2019, 13:23
    M0TZO replied to a thread Base Radios How to set WFM on FT-857D? in Yaesu
    The 857 is similar to 897 and on that you can set FM or NFM on one of the menus.
    1 replies | 136 view(s)
  • pendra's Avatar
    Thu 20th Jun 2019, 03:15
    pendra started a thread Base Radios How to set WFM on FT-857D? in Yaesu
    On my $10 SDR , I can choose to receive on FM and or WFM But on my expensive Ft-857D the only choice I have is for FM option is FM only. Is there a way to change this? The reason is that WXtoIMG stipulates WFM for satellite data reception. Currently the pics I receive on FM seem to have lost( or not received) a lot of data. Thanks in advance
    1 replies | 136 view(s)
  • TomC's Avatar
    Wed 19th Jun 2019, 17:05
    I have a new Baofeng UV-5X3. What is the expected battery life? I get about 15-20 minutes of scanning, then have to charge 1.5hours for another 15-20 minutes. That seems pretty short battery life. Is that the normal time? How long does the 3800mh battery last?
    1 replies | 118 view(s)
  • N4AAB's Avatar
    Wed 19th Jun 2019, 16:45
    N4AAB replied to a thread Introduction in Introduce yourself
    Hello and welcome from N4 land !
    2 replies | 172 view(s)
  • N4AAB's Avatar
    Wed 19th Jun 2019, 16:44
    N4AAB replied to a thread New Member in Introduce yourself
    Howdy ! Welcome to the forums.
    3 replies | 303 view(s)
  • N4AAB's Avatar
    Wed 19th Jun 2019, 16:42
    Howdy and welcome aboard !
    4 replies | 129 view(s)
  • N4AAB's Avatar
    Wed 19th Jun 2019, 16:40
    Internet providors used to be local, mostly. Now we get to deal with MegaCorp who says they want to help their customers. Some years ago I had a cable tv company email address. Some spammer started forging my email address in the spam sent to me. The idiots at the cable company tried to claim to me I was sending it to myself. I haven't had an account with them since.
    7 replies | 469 view(s)
  • N4AAB's Avatar
    Wed 19th Jun 2019, 16:36
    At this point, that would be my feeling on this as well.
    50 replies | 5179 view(s)
  • alzadjali's Avatar
    Wed 19th Jun 2019, 13:09
    Thank you, how can I get a hacked firmware?
    3 replies | 120 view(s)
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