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  • brandon lind's Avatar
    Today, 03:51
    Most (not all) PC supplies are a bit noisy and the 12v they output drops a little when keyed down on a ham radio, making them a bit low on the voltage side of things for most finals. I've killed several running car audio amplifiers on them. If you can crank it up to at least 13v and filter the kHz garbage out, absolutely. I bought a computer from cyberpower pc in 2015 and, well, they must have stiffed me on the power supply because this 800w 80+gold that cranks out 60A @12v shats all over my radio.
    4 replies | 91 view(s)
  • gnuuser's Avatar
    Today, 02:45
    I constructed my own by converting a 600 watt pc power supply ( there are many site that you can view on instructions to do this) with the silent cooling fans its reasonably quiet and provides a butt-load of power (about 44 amps)
    4 replies | 91 view(s)
  • gnuuser's Avatar
    Today, 02:35
    congrats on getting your ticket! Im looking for exam sites in my area and hope to get my license soon. I couldn't go just before the covid hit because i had just got out of the hospital from a pacemaker implant! there are online testing sites but you have to go through so much bull$#!t that its better to wait until a local test site is available. Im a firm believer in building your own equipment because you learn so much more about it. not to mention there are a lot of elmers out there who are more than happy to help. also learning morse all over again is fun.
    2 replies | 264 view(s)
  • R2D2's Avatar
    Yesterday, 21:18
    Not quite sure what you mean by window? Car window, window on a house, what do you expect if you don't have the right antenna and are trying to receive inside of a building? Just guessing I would guess you live in an apartment building - steel reinforced concrete - which is hopeless The easiest antenna to deploy is a Discone, a discone is multibanded. You need coax, enough to go from the antenna to the receiver, and you need the proper connector for each end - I would guess the Discone would have a PL connector, so you could go with a RG 58 or Mini 8 type coax - check with your local cb radio shop for cable. Since you aren't transmitting on this antenna it doesn't matter if the coax is 50 or 75 ohms.
    2 replies | 65 view(s)
  • K6CPO's Avatar
    Yesterday, 17:49
    https://www.hamradio.com/detail.cfm?pid=H0-003728
    4 replies | 91 view(s)
  • AC5PS's Avatar
    Yesterday, 14:06
    You can buy air ban verticals you will probably find them online, I had one years ago. Or you can get a 2 meter “base” antenna for receive only. Both are going to be maybe 150-300 dollars. Good luck on your project and your PPL ! 25 year commercial pilot here, retired.
    2 replies | 65 view(s)
  • R2D2's Avatar
    Yesterday, 11:48
    Astron RS 35M It is said that a 100w HF radio will draw about 22 amps and a 50w FM radio will draw about 10 - 12 amps. Since you can only transmit on one at a time,you can run both on this one power supply. Linear power supplies are at best about 75% efficient, so you need a safety factor, if you are going to run a 100w HF radio you need a power supply that produces at least 30% more power.. Avoid switch mode power supplies, they are cheap, but they are noisy and they aren't as reliable.
    4 replies | 91 view(s)
  • kjwhit's Avatar
    Yesterday, 00:54
    Just took delivery a Yaesu FTM-400XDR and want to first use it in the shack. Looking for recommendations for a power supply. The radio at max draw pulls around 13 amps. I may want a power supply that would run a couple of mobile radios down the road.
    4 replies | 91 view(s)
  • gnuuser's Avatar
    Yesterday, 00:38
    I use Peppermint 10 and have made extensive use of the armature radio section in synaptic package manager. almost any linux can download ham apps. But there are a few versions of Ham linux that are centered exclusively for ham radio. they are: (3 off the top ) andys ham radio linux, https://sourceforge.net/projects/kb1oiq-andysham/ and debian pureblend. https://www.debian.org/blends/hamradio/
    4 replies | 705 view(s)
  • BlueScope819's Avatar
    Tue 30th Jun 2020, 23:45
    First time ever on the forum and novice with radios, please don't flame me. I'm working on getting my private pilots certificate and currently I can't do any lessons because of COVID. My instructor recommended that I get a radio receiver, for the aviation freq range, which I was able to get from a friend. The model that I have is a IC-R10. I'm able to pick up the right frequencies for aviation with it, but I need to be within about two miles of the airport for the signal to be clear. From my basic understanding, antennas are designed for a specific frequency range and when you have a broad frequency antenna like I have with this, it's not very good at picking up certain frequencies. The aviation range is from 118 - 137 mhz, but I need to be able to receive 150mhz as well. Do you expects have any antenna options which are more powerful than this basic one that I could easily mount in say a window and would be comparable with this scanner / receiver? I have no idea what the standard is, but it's not...
    2 replies | 65 view(s)
  • brandon lind's Avatar
    Tue 30th Jun 2020, 23:18
    brandon lind replied to a thread Listening to repeaters in Yaesu
    Commercial broadcasting refers to a one-way communication to a broad spectrum audience with no expectation to receive a response. Commercial broadcaster stations use translators (aka broadcast relay stations) not repeaters. To make an association between the two is a senseless way to inject your negativity. And with your consistent hatred toward FM VHF and higher radio use, it shocks me you would even monitor your local repeaters to know they have been quiet for that long. People use FM on HF too. How the information is incorperated into a signal doesnt make its use in the hobby less valuable intellectually. Curious where you were going with that statement because it doesnt seem helpful to a question about repeaters. Just because you dont hear any FM stations doesnt mean you cant learn about FM. You dont need a QSO to learn. And cell phones didnt kill repeaters, there are still countless repeaters in use every day. Your hatred toward "walkie talkies" and anything non-HF is TRYING to kill repeater use...
    8 replies | 1005 view(s)
  • R2D2's Avatar
    Tue 30th Jun 2020, 22:11
    The only balanced antenna is a half wave antenna also referred to as a Hertzian antenna or a Di Pole. Full wavelength antenna is not balanced. Most verticals uses a form of stacking - ex Diamond X510 https://www.diamondantenna.net/x510series.html X510HDM Base Antenna Specifications:
    5 replies | 5515 view(s)
  • R2D2's Avatar
    Tue 30th Jun 2020, 22:04
    R2D2 replied to a thread Listening to repeaters in Yaesu
    Well - amateur radio isn't commercial broadcast radio, so just because there is a repeater there, doesn't mean that anyone uses it.. Where I live, the local repeater owner joined a group of repeater owners and linked 50 repeaters together, they call it the Wide Area Network - WAN repeater system.. I haven't heard a conversation on the wan in 6 months - since my cousin Tony Bologna moved to a rest home. Cell Phones killed repeaters! Might I suggest you do a web search - maybe city data dot com - for your area and find someone that is an active ham to tutor you. There isn't much you can learn from FM Communications where I live, most people don't even use their call signs anymore.. Simplex sounds more like cb radio than ham here..
    8 replies | 1005 view(s)
  • AC5PS's Avatar
    Tue 30th Jun 2020, 12:14
    AC5PS replied to a thread ARRL in history. in Clubs
    I had the pleasure of operating W1AW. FT-1000MP, 1000 watt amp Yaesu (don’t remember model) and a big beam. I started a pileup on 20M CW. I’ll never forget that.
    3 replies | 149 view(s)
  • kc5fm's Avatar
    Tue 30th Jun 2020, 04:32
    kc5fm replied to a thread ARRL in history. in Clubs
    ARRL is a non-profit organization, and was co-founded on April 6, 1914, by Hiram Percy Maxim and Clarence D. Tuska of Hartford, Connecticut. https://en.m.wikipedia.org/wiki/American_Radio_Relay_League Definitely. Sent from my iPhone using Tapatalk
    3 replies | 149 view(s)
  • brandon lind's Avatar
    Tue 30th Jun 2020, 04:12
    brandon lind replied to a thread ARRL in history. in Clubs
    4/6/1914, definitely went back some years!
    3 replies | 149 view(s)
  • gnuuser's Avatar
    Tue 30th Jun 2020, 00:08
    gnuuser started a thread ARRL in history. in Clubs
    I knew the ARRL went back some years But today I found reference to it in a 1959 practical dictionary of electricity and electronics by R.L. Oldfield on page 3 (3rd entry from the bottom right of the page). Interesting find! I'll probably join the ARRL forum and let them know of the find.
    3 replies | 149 view(s)
  • K6CPO's Avatar
    Sun 28th Jun 2020, 18:48
    K6CPO replied to a thread Listening to repeaters in Yaesu
    this is probably the best explanation of repeater operation I have ever seen. This may help you in determining if you're doing anything wrong. http://www.alpinelakes.net/uploads/2/2/5/9/22591368/repeater-basics_jon-perelstein__1_.pdf
    8 replies | 1005 view(s)
  • M7NYH's Avatar
    Sun 28th Jun 2020, 10:47
    M7NYH replied to a thread Listening to repeaters in Yaesu
    guessing you are in the US because you refer to Technician licence i'm in the UK so YMMV - repeaters over here are ctcss tone to access ( to stop random transmissions o nthe input opening the repater) but they transmit without a ctcss tone , so if you have a recieve side ctcss set on a channel it's only going open the audio if the ctcss tone is present ...
    8 replies | 1005 view(s)
  • M7NYH's Avatar
    Sat 27th Jun 2020, 18:46
    M7NYH replied to a thread Handheld Radios Repeater in Amateur Radios
    I believe the standard in the UK is that toneburst access is still allowed but the repeater has to have CTCSS on the input , the output side of amateur analogue repeaters in the UK is without ctcss ... ( where commercial PMR will tend to be tone in and aobut for the limited security / lack of unwanted signals it is perceived to offer
    15 replies | 501 view(s)
  • R2D2's Avatar
    Sat 27th Jun 2020, 17:59
    R2D2 replied to a thread Handheld Radios Repeater in Amateur Radios
    The tones are coordinated by the area, for example, the western most portion of western pennsylvania and eastern ohio uses 103.5, the middle uses 173.8, the southern uses 123.0 or 131.8 - each section of the state uses a different PL. The PL is not mandatory but is suggested.. There are a lot of repeaters that doesn't use a PL because the repeater owner group is stuck in the 70's when the radios did not come with a PL board, so they are afraid if they run a PL they will lock out a small segment of their group. Or some silly notion that they can hear it and it degrades their audio. There are repeaters here that does not use it and when I key one I key 3 because my QTH is in a good location and can be received for 100 miles in all directions with the right band conditions..
    15 replies | 501 view(s)
  • G7NFP's Avatar
    Sat 27th Jun 2020, 11:31
    Yes PMR446 is limited to a maximum of 500mw. OFCOM is very clear about that. Business radios can have 4-5w power, but licence is required. There may be a few other ways to bend the rules, but hams should be following Ofcom's rules. For those who want to use more power in UK there are several options. CB radio, pay for a business licence, or sit the super easy Foundation exam. https://www.walkie-talkie-radio.co.uk/information/two-way-radio-licencing-in-the-uk Having said that, l do not claim to be an Angel. Before l was a ham l broke Ofcom's rules.
    18 replies | 982 view(s)
  • KD9KVS's Avatar
    Sat 27th Jun 2020, 11:09
    I got a cheap China antenna to get my signal outside of my vehicles and had a really good time with it until I got a proper mobile unit. I was hitting repeaters from 15+ miles out. They’ve been dropped and thrown (I have children) and just keep working. I’ve heard these are made by someone other than baofeng for baofeng. I just know they function well, and do all I need. May not be exciting to all, but it’s a lot of fun for me. Maybe pull that bad boy out of the drawer and give someone else a chance to get started with it, or do some experiments with it.
    18 replies | 982 view(s)
  • M7NYH's Avatar
    Sat 27th Jun 2020, 10:41
    it looks like R2D2 is doing his grumpy old man act again a HT is a ham radio UK PMR is not limited to 500mw - 'pmr446' licence free is ... on Uk simple light you can use 5w and on site specific you can go higher if the licence allows ... also before airwave the Ambulance service used what was effectively a commercial VHF PMR system , ditto the fireservice 'fireground' UHF kit
    18 replies | 982 view(s)
  • G7NFP's Avatar
    Fri 26th Jun 2020, 13:55
    Ah yes the Baofeng UV-9R. I have one of those living on a drawer. I bought that one specifically because it had 8w transmit. Pop back & update us on your progress as no doubt be others looking to solve the same issues as yourself.
    18 replies | 982 view(s)
  • AC5PS's Avatar
    Fri 26th Jun 2020, 12:18
    AC5PS replied to a thread Handheld Radios Repeater in Amateur Radios
    Let me rephrase; I don’t remember the year, I think it was in the late 90’s if you were wanting to put a repeater ( analog) in operation it has to have a “tone “. If the repeater was already in operation it’s grandfathered in.
    15 replies | 501 view(s)
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