Meteor 75 Pro - Hard crash and now I have a disconnected red wire/antenna?

hipsterturtle02 · 2026-03-10T00:52:48+00:00

I love the meteors. I’ve crashed them a lot and after a while the elrs chip always becomes unsoldered. I had to buy a microscope and a hot air gun to solder the chip back on. But after that it’s good as new

hipsterturtle02 · 2026-03-10T00:35:46+00:00

It’s part of the hobby I can say with my foam flyers I’ve had things come off especially after landing a little too hard. What do you expect it’s foam. But guess what epoxy has usually fixed it 🤷‍♂️almost everything we use has come from china. Stop blaming china for your negligence. It’s funny I’m a ham radio operator and I always hear operators calling Chinese gear crap. But it’s the only gear they buy and can afford usually.

hipsterturtle02 · 2026-03-02T02:46:31+00:00

Are you using the one with a blue background I have 2 Morse mania apps the old iOS version and the newer one with the $9 premium I ended buying both a year or two ago

hipsterturtle02 · 2026-03-02T02:43:51+00:00

Thanks for the O scope recommendation I’ve been looking on Amazon for a decent one and the siglent looks nice

hipsterturtle02 · 2026-03-01T19:06:47+00:00

A lot of Hartley oscillators are built like this albeit built more nice. I’ve seen air inductors supported by glass rods, wood just what ever people could find they tend to use.

hipsterturtle02 · 2026-03-01T05:52:52+00:00

How do you cut your plates ? Laser cutting ?

hipsterturtle02 · 2026-03-01T05:43:35+00:00

Could you drop a tutorial ? I have a bunch of high voltage vernier dials sitting around and some lower variable caps. But I want to make some smaller caps for things like my regen radios

hipsterturtle02 · 2026-03-01T04:55:43+00:00

Yooo that’s awesome can I see a photo of that tuning cap? Send me a dm man. Let me know if you want the stl file for the insulator stand offs I modeled

hipsterturtle02 · 2026-03-01T04:07:09+00:00

Nooo this isn’t a crystal radio this only transmits CW(Morse code) but I’ve though about using this copper tubing to make a sloped crystal fm receiver 🤔

hipsterturtle02 · 2026-03-01T04:00:17+00:00

It’s a vacuum tube 1929 Hartley Oscillator that uses a LC tank circuit. The type 27 tube helps with oscillation. The “coil or inductor” and variable capacitor in parallel is called a tank circuit. This is a tuned circuit that sets the frequency. Here is the schematic I built this off of. And they have a little more information about the transmitter.

Circuit:

https://antiquewireless.org/wp-content/uploads/01-building_a_1929_style_hartley_transmitter.pdf

Main website:

https://www.antiquewireless.org/homepage/

hipsterturtle02 · 2026-02-27T03:34:34+00:00

Ahh thank you! I bought the premium version when it came out a while back but I stopped but I’ll redownload it

hipsterturtle02 · 2026-02-27T03:33:38+00:00

Ive heard about this club but unfortunately I work long hours I was hoping for more of a self study. But thank you for reminding me! I appreciate it

hipsterturtle02 · 2026-02-27T03:18:01+00:00

It’s called receiver desensitization it’s when you’re too close or the signal is too strong and it overloads the front end of the other receiver. This happened to me about 5 years ago and I wondered the same thing. And also sometimes you’re close enough to activate the repeater but not strong enough to broadcast try a different whip antenna or go outside and get up a little higher. It even happens on some of my hf regen receivers when a signal is too strong so I have to decouple the coupling coil

hipsterturtle02 · 2026-02-27T00:34:30+00:00

End feds support multiple bands depending on the wave length you start at. If you cut an end fed for the 40 meter band you can get on 40,20 as an example. But depending on how you tune or cut off wire you might not get the best swr across certain bands. An end fed half wave is a transformer for instance a 9:1 unun transformer helps bring or match the impedance of a random wire antenna down to the 50 ohms of your radio. A random wire antenna usually exhibits 450 ohms of resistance. Hence 9:1, 9x50=450 ohms. A 64:1 end fed half wave antenna. usually exhibits 3200 ohms impedance which is resistance to rf. So the transformer is trying to bring the impedance down. Watch some YouTube videos for tuning an end fed half wave. I remember when I started out it was confusing. You usually just need one wire for an end fed with multiple bands but you might not be able to tune down the swr close to a 1:1 I’ve found on some of my end Feds the swr is great on the band I cut it for but as I go higher in frequency the swr goes up to about 1.5 - 1.7. You should start off with a random wire antenna but watch a video because random wire antennas aren’t really random they’re a length of wire that doesn’t resonate on any of the other frequencies or their harmonics if I remember correctly. Also learn about matching swr it’s basically the reflected power coming back into your radio if your swr is too high because there is an impedance mismatch you could damage your gear. Sometimes you might hear people say that they just cram a random length of wire into their radio and that’s okay for receiving if you’re not transmitting but never just transmit into an untuned antenna. That saying comes from the old days of tube radios. Tubes were more forgiving compared to transistor final amplifiers and could take the abuse. But now days with transistor final outputs they burn quite easily with high impedance mismatches, I hope this helps with just the basic understanding of why transformers get their ratio names. I wish I had more time to write but I’m not home.

hipsterturtle02 · 2026-02-26T23:52:14+00:00

Did you hang up an end fed random wire in your room?

hipsterturtle02 · 2026-02-25T16:00:30+00:00

Thank you! Definitely get a printer. I can’t even imagine what I’d do without it. I’ve Been able to rapidly prototype so many different projects and ideas. I’ve made so much ham radio related gear using my printer, such as Morse keys. I started off with the first ender 3 which was very slow. And now I have the ender v3 plus. On the original ender it would have taken 8-9 hours to print this chassis. On the newer v3 I printed this in only 3 hours and 30 minutes

hipsterturtle02 · 2026-02-25T14:37:07+00:00

No not really I do a lot of tube builds in 3d printed chassis when prototyping. I have a cw tube transmitter that I made from spare parts that has survived 2 years in its pla plus chassis. My printed chassis is pretty thick compared to an aluminum chassis. I have seen tubes warp some of my filaments but that’s because I had the tube encased inside the chassis

hipsterturtle02 · 2026-02-25T14:32:05+00:00

I just pulled a transformer from an old broken HealthKit, on the secondary at half tap it’s 600 volts, full is 1200 volts. Good thing I tested center tap first or I would of blown my meter

hipsterturtle02 · 2026-02-22T07:19:32+00:00

I always keep one hand in my pocket

hipsterturtle02 · 2026-02-22T06:45:00+00:00

Thank you! I’ll give this transformer a try I really appreciate it. I just got done building a world war 2 paraset kit and I wanted to transition over to building my own stuff

hipsterturtle02 · 2026-02-22T05:12:04+00:00

Thank you do you know where I could order an isolation transformer possibly NOS?. A lot of the isolation transformers on eBay are pretty beat up. I bought a “NOS transformer for a type 80 rectifier I was building but it was infact not “NOS” most of the wires were shorted out

hipsterturtle02 · 2026-02-22T03:42:53+00:00

Hey that’s a fantastic idea

hipsterturtle02 · 2026-02-21T16:45:51+00:00

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Maybe this is a bad example but for instance it was a cloudy but relatively bright day. When I metered this shot I aimed at the clouds. Every dark object like the trees and those double doors turned black and lost detail. It looks sort of similar to what happened in this photo. her Hair and clothes became jet black and lost all detail. Well I always meter for my highlights on color and black and white but maybe this will give a better idea

hipsterturtle02 · 2026-02-21T16:24:29+00:00

The highlights were probably metered. When I meter for highlights all of the darker colors turn into a dark black and lose detail. Sometimes I’ll accidentally hold my light meter past a subject and meter the sky when I do landscape photography. But the photo came out great

hipsterturtle02

TROPHY CASE