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I figured a cheap way to go mobile, and that was to use my car jump-starter battery pack!

I got a 5.5mm jack to screw hole.... checked my + / - with a multimeter, I've had too many things go pop by accident!

The markings were the right way around on the jack, so I screwed the positive wire into the positive marked hole, and negative in, plugged the jack in the power bank, and pressed the power button on the bank.

The RT95 made a little click, and the power across the screw terminals on the 5.5mm jack read 0.5v.

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What!?

Do you think there's an inrush current tripping the power bank safety? (if it has one!)

Is some buck boost converter stalling?

Is there something special about the RT95 power requirements?

Can I do something to use this power supply?

(Incidentally - a 12v 2A power supply works fine, on Low and Medium power.... and browns out on high power.)

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13.8 volts +/- 15%

15 volts - 10 Amps - Jack plug

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This went in the power bank, and screwed into the RT95

Hi

I am still looking for a good solution to place an antenna on a balcony. I have found the Comtrak YA-VUSQ antenna which seems promising, at least from the not-so-precise description. What I cannot find is a diagram showing the directivity in both configurations (V/H), a good review and how it compares to a simple omnidirectional antenna.

What I like, from that shape is the size, which could allow me to attach it to the railing, the fact that it does not reach the upper floor balcony and that it seems to have a "somewhat directionality", which could allow me to avoid dispersing power towards the surrounding buildings.

Do someone has experience with these kind of antennas? It is unclear to me if the are halo, folded, loops and I also cannot find something to compare.

Thanks in advance to all your kind comments.

Does a coax switch provide much (if any) electrical separation between two radios or is one basically using the other receiver as a dummy load? IE is the radio not "active" getting a dangerously high level of RF in its front end?

This "LEctenna" competition got me thinking.

It's just an LED/diode tuned to a 2.4GHz transmitter... and they used foil around the transmitter to focus the radio waves in a specific direction.

Would this work with a dipole both RX and TX signals? Instead of a 2m/7cm Yagi antenna, I could just form a parobola!

https://youtu.be/8BpYhaTf2wg?si=uWf7LII0H-2gMMeI&t=52

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I have an antenna I need to remove before I sell my house. Who does that kind of work? 50 foot ham antenna.

Interior, there is no space at all for a ham radio and ripping out the current radio isn't an option.

Roof, sadly i cant find any better images. My model has a sun roof but I don't think it would get in the way.

So, given the images, I have no clue what so ever on how I could even manage to get a ham radio in this car or even an antenna on the roof. I'm fairly new to this hobby, but my main goal is weather tracking and I was inspired by some dude driving around with 3 antennas on the back of his car and a laptop displaying weather radar. My only current ham radio equipment is a Baofeng uv-5r, and an RTL-SDR neither of which i really know how to set up but I am willing to get some of the more expensive equipment. I'd prefer maybe getting additional things to maybe help my current equipment but i understand their limitations. I still want to be able to make contact with other people once i get my ham radio license but for now i mainly want to see weather radar or other things i can possibly do with my laptop and an SDR.

i dont know what to try anymore. pretty much restricted in space.

Currently using a 67ft EFHW, in an Horizontal "---" configuration. i am surrounded by mountains and metal clad sheds, soil is pure clay. i dont know exactly what is affecting what, but my RX is very bad even thought TX seems alright even at 10W. tried 3 different radio with pretty much exact same result so its really the antennas fault. i mainly want to listen to local (500km~) digital on 40m.

i already tried:

• 28ft GP coil loaded vertical (very bad RX)
• 67ft EFHW in both Horizontal and Vertical (bad)
• 40M Frame Antenna. (seems good, but extremely directional)

no towers and land is rectangular in shape (75ft X 300).

I’m a US ham with a sequential call starting KD0 - issued in 2010 or so. New hams in my area are getting KF0 prefixes and I’ve seen KQ in other call districts.

I was looking through QRZ and saw at least a hundred expired or expiring calls on their list that felt like sequential calls - a lot of WA0s, WB0s, KC0s and KD0s and a spattering of other 2x3s that don’t seem like vanity calls.

Does the FCC eventually feed “dead” sequential callsigns back into the available pool, such that a brand new tech could get an older prefix 2x3 call as their systematic call today? Or do they only go forward (eg after all KF0s, new hams will be KG/KH/KI0?

Greetings all. I'm trying to get Gridtracker to automatically push my logs from Gridtracker to LoTW. I believe I've set everything up correctly in the Logging tab of Gridtracker, and when I click the Test Download I get "Success" and when I click Test TQSL I get the version reported back. However, don't see any of my QSOs being pushed to LoTW.

Can anyone give me a tip where I'm going wrong? It's honestly not clear to me if the options under Logging are all two-way sync or if it's actually trying to pull from, instead of push to, LoTW.

https://preview.redd.it/xjj3fwp6x3yc1.jpg?width=1269&format=pjpg&auto=webp&s=816998c69acfc1aeb6ae92bb14e03440bce5efcd

Greetings ... studying for the basic exam to be written next week. I've downloaded the 1000 questions from the GoC website and quickly worked my way through the first 100 or so. Then I though, why not start at the end? There I found all sorts of detailed question on components. Is the 1000 list question the sample from which the basic exam is generated? Or is there a cut-off in there somewhere? i.e. is there a point to look at the say 500-1000 questions? Is any of that potentially on the basic exam? Cheers

I don’t know if it’s me or was 20meters just plain horrible

I’ve got an IC-2730A on the way. I’m gonna be doing a remote install because there’s limited room in my 2017 tundra. Under the seat seems like a good spot but there is a substantial sized cooling fan on this radio and I worry about blowing junk into my radio when the fan is running that close to the dirty floor. Am I being over cautious?

Hi all,

The title says it all. I had borrowed once an UnUn that had 3 position switch, for 1:4, 1:9 and 1:49. It worked great, but I had to return it. Now, I'd like to make one myself. I have two FT240-43 ferrite core. One for UnUn, one for choke, and I've got 2 boxes.

Now, I need a how-to.

Can anyone share schematics or a video to this specific design, or one that is very similar?

73

For a while now, I have wanted to start my own AM radio station. I have been unable to do it because of the lack of ways that are cheap and power efficient. Also, the FCC really hates average people broadcasting radio. Please help me!

I've set up two different digipeaters at home (no running at the same time): A picoAPRS v4 in fill-in-digi mode and a Universal Radio Controller with the bluepill board. The digipeater is connected to a 2m groundplane on the roof of the house, receives a lot of stations and is heard, too.

My HT (Yaesu FT1XD) sends beacons and messages which will then be properly digipeated by my own digipeater, received by a proper well-known digipeater/i-gate and finally delivered to the destination station. The problem I have is that answers to my messages don't even reach my own digipeater and therefore also not my HT. I've tried with messages from/to APRSdroid, real APRs stations and services like WA1GOV-10.

When I connect my HT directly to the big antenna on the roof and therefore omit the own digipeater, I can perfectly receive messages sent to me via the public digipeater/i-gate.

Any recommendations please?

Does anyone have some best practices for arranging some antennas along with a starlink dish? I'm looking at eventually putting a small tower up to get my starlink dish above the tree line and I'd like to put a dual band UHF/VHF antenna, a GMRS antenna (Maybe combined with the former), and eventually I'd like it use it as the high point for an inverted V HF setup. Is that too ambitious? I think the starlink dish is going to have to take the top mount, wasn't sure how I could rig the other stuff to keep it mostly omnidirectional (GMRS would be a repeater if I can do it on a separate antenna).

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We are pleased to announce that our faire is scheduled to take place on June 8th, our 7th Maker Faire, in Port Jefferson Village, New York, USA (on Long Island). We are looking for a connection in the Amateur Radio circles on Long Island to explore inviting them to the faire (but open to anyone who is interested to apply). Can someone point me in the right direction?

My wife's grandparents have either passed away or are now in a rest home now (intentionally vague about everything). Her grandfather has had a ham radio operator license for over 70 years now. There is NO ONE in our family that has any interest in this stuff except for my curiosity.. her parents don't want to go through anything, they're going to hold an estate sale. My question is, is there anything in these pictures super notable or personal I should hold on to? Or something that is just worth a LOT that may be overlooked? My inlaws have enough money so it's really a money thing per se.. and as much as I'd love to come here with a moving van, take all of it (they said I can have anything I want) I just don't have the time or space for EVERYTHING. And that does gut me.. I have a lot of respect for the man and he was in his late 90s, but it's still hard. Please if anyone sees anything in here I should focus on, I'd be appreciative. The one thing I've grabbed is his plaque with his "call sign" I think? It's a bunch of letters and numbers. Thank you in advance. I'm still here so can get any more pictures wanted/needed.

Hello,

I have a lose Amateurradio love for a couple of years and have a Yaesu handheld radio to listen in from time to time but never had the time so far to acutally get license to start actively participating.

My question here is not specifically for Amateur radio but for licensed radio in motorsport. Typically comunications to the car and to the crew is done via digital radio systems. Layout wise the car gets accesed via a repeater and a truck mounted Antenna while crew comunicates driectly via handhelds.

I'm currently looking for an opiton to "remote cotnrol" a Kenwood radio while supporting a team remotley. In the past we either have a fancy and expencisve VoIP intercom system which often times has a way to also connect remotly. The team i want to help this time just has radios and no intercom. Typically to just follow an event we would just connect the output of a radio to the aux port of a laptop and have the audio in Discord or a similar tool. But with this setup it would not be possilbe to speak on the radio. I baiscally need a software + hardware solution to plug into the headset port "press" the PTT button remotly to reply.

The Radio used is a Kenwood NX-200G-E3.

I tired to google what I try to do, but I I think i stuggle to search for the right keywords.

With the wide comunity here I guess somebody had a usecase for something similar with his amateurradio setup already. I'm interestend in DIY or ready made solutions.

some USA politicians want to force auto makers to include AM radio receiver capabilities to their car.(and its a good thing) they say its important in order for people to listen to emergency broadcasts. bill S.1669

https://www.congress.gov/bill/118th-congress/senate-bill/1669

Does anybody has a firmware Update for Hytera PD785G (UHF), PD785 (VHF), AR685 and PD505? All four are European (German) Models? They are currently an a A7 and A8 Firmware, but I know there is at least a 9.2 (for the PD785)

I have my shack in an outbuilding. That said, I was to do some listening in my main home. It has a flat and sort of square roof. I don't go up there often so this is a set-it-and-forget it deal. There are ground wires up there for an old satellite dish. I was going to tie it to an unused 75ohm coax connection to my office.

With that in mind, what should my antenna be? A loop or end fed? Should I bother with an unun (9:1?)

I am looking for "study" material that would be useful to use as a refresher. I passed my Extra exam about 25 years ago, then fell out of the hobby for the last 20 or so. I have forgotten a lot of the theory and practical applications for our hobby. I'd like to refresh my memory, but a lot of study guides I find are geared to memorizing the questions, which is a valid method of studying for a license---it just doesn't help me in this endeavor. I'd like to avoid the ARRL publications as I think they are all poorly written. Do you have any suggestions?

Edit: for clarity's sake, I've kept my license current, so I'm just looking for something to bring me back to speed. Thanks everyone

I dont think i am do anything wrong but my TYT TH-UV88 when on wide band mode it cant receive narrow band any signal(can receive wide band as it is same band) [can receive narrow band only when i'm pressing Moni] but when on narrow band it can receive narrow and wide band like normal

I need wide band because narrow band can't make my voice loud.

Firmware
20231124 TH-UV88 latest firmware(UV88_Eng_BQ1_53_20231124.hex)
Sql = 1
VFO on same freq as second radio

Would be very grateful if someone can help me fix this problem.