frostbite
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Post by frostbite on Nov 10, 2023 14:53:49 GMT 10
Do those UHF repeaters rely on the internet to work?
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malewithatail
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Post by malewithatail on Nov 10, 2023 15:46:36 GMT 10
No, not the normal types, but some have net connection for remote configeration etc.
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bug
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Post by bug on Nov 10, 2023 16:07:46 GMT 10
No cell phones? Probably relax.
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Post by PrepGoldCoast on Nov 10, 2023 16:41:59 GMT 10
Yes was a bit of fun. My carrier runs off Optus and I was no cell for the day. Gave my Son a handheld UHF, on repeater 3 on the gold coast for his school bag. It works from the school grounds. I get VLT03 repeater from anywhere on the gold coast via the Jeep UHF or my handheld UHF. My Son works the UHF fine, usually we use them camping on a more private channel, but on 'Optus day' we were still in touch, if needed. Didn't use it but was great knowing he could contact me any time, and I could be anywhere on the coast working. From my house, using the above, we can communicate over UHF anywhere we can get the repeater. A long long way from base camp Does your UHF have the selcal function? Would give you another layer of security if you missed your sons call. Get back to your car and your UHF would be giving you an alert that you have had a call. Good Q, not sure, will investigate.
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Post by PrepGoldCoast on Nov 10, 2023 17:17:50 GMT 10
Does your UHF have the selcal function? Would give you another layer of security if you missed your sons call. Get back to your car and your UHF would be giving you an alert that you have had a call. Good Q, not sure, will investigate. Just to clarify the above re. missed call, if I was expecting poop, or poop to happen, or in this case, no cell coverage, my hand held is on my belt with a ear piece right in my earhole. Missed is very likely a non event, possible, yes. Selcal is something I am investigation right now, thanks for the heads up.
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tactile
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Post by tactile on Nov 10, 2023 17:31:30 GMT 10
Good Q, not sure, will investigate. Just to clarify the above re. missed call, if I was expecting poop, or poop to happen, or in this case, no cell coverage, my hand held is on my belt with a ear piece right in my earhole. Missed is very likely a non event, possible, yes. Selcal is something I am investigation right now, thanks for the heads up. Ive just realised Selcal is quite rare on handhelds these days. The Icom UHF CB hand held has it, as well as optional encryption...might be handy too. Looks like none of the GME stuff has it...not sure if Uniden does...will have to do some digging.
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Tim Horton
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Post by Tim Horton on Nov 13, 2023 11:32:18 GMT 10
I know virtually nothing about the technical of wireless 2 way radios.. I'm pretty much electrical illiterate.. Only knowing a little from when my dad listened to in the 1970s-80s with his old Kenwood 2 piece transmitter, receiver...
The prospect of no communication at the level it is today seems both a disadvantage and advantage... Disadvantage being no or little information.. Advantage being lack of info overload with so much being likely inaccurate... As I can tell the more info there is, the bigger percentage that is bad info one way or another.. It also seems the best skill, and hardest to learn, will be knowing what you can trust out of what info you do get.. ??..
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malewithatail
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Post by malewithatail on Nov 13, 2023 12:53:38 GMT 10
That's why you need multiple sources of information, to cross check one against the other.
Most, probably all, commercial radio stations these days rely on the internet to supply the means to transmit from their transmitter sites, which are away from the studios. Take down the net, take down the information chain for the general public and chaos will ensue. Society would melt down if they couldn't get their latest fix of headbanging music or talk-back.
Back to smoke signals and the pony express !!
WW3, The country won’t be ready, but you can be.
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frostbite
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Post by frostbite on Nov 13, 2023 14:01:56 GMT 10
Quote: Back to smoke signals and the pony express !!
Back to the Postman delivering letters
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spatial
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Post by spatial on Nov 13, 2023 14:52:12 GMT 10
That's why you need multiple sources of information, to cross check one against the other. Most, probably all, commercial radio stations these days rely on the internet to supply the means to transmit from their transmitter sites, which are away from the studios. Take down the net, take down the information chain for the general public and chaos will ensue. Society would melt down if they couldn't get their latest fix of headbanging music or talk-back. Back to smoke signals and the pony express !! There are a few other things. I got a small weather station from Bunnings a few years back, the cockatoos destroyed it.. Got a number of barometers for atmospheric pressure. Looking at getting a fancy sports watch with Altimeter, Barometer, Thermometer, and compass build in, also shows a graph of change over time. We rely so heavily on weather forecasts esp. rain radar - would have no idea if a big storm was coming through post grid down. My father checked his barometer daily and would record values including rainfall.
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malewithatail
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Post by malewithatail on Nov 13, 2023 16:46:32 GMT 10
There is some equipment that can show a thunderstorm, well before its visible, and can be run from a battery if required. Thats called an electrometer, and it monitors the electric charge in the atmosphere.
I made one 40 plus years ago, and ran it with a chart recorder for many years, finally using a data logger and PC.
There is a fine weather potential of around 100 v/meter at sea level from the surface of the earth to the ionosphere. This voltage can be detected easily and is influenced by disturbances in the field, such as meteor showers and storms. Range ? Is local, probably 50 miles, but Ive found that the gear can give warning of severe weather sometimes days before the weather radar can.
It detects both the positive and negative lightning discharges and can discriminate between cloud to cloud and cloud to ground strikes.
40 plus years ago I did my engineering thesis on the instrument, but radar has taken over.
Simple equipment such as this may be the only things we have left after the fall.
Happiness is a choice.
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Tim Horton
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Post by Tim Horton on Nov 14, 2023 0:45:33 GMT 10
Yes... As weather goes... By monitoring the barometer, temp, wind direction, season of the year in your location can go a long way in helping plan around weather... At a time I had 2 of those combination temp, barometer, humidity nice indoor weather wall hanging stations.. One in the house, the other indoors in the shop.. Other than temp they ran roughly the same readings.. If they were vastly different readings combined with a wind change of direction and velocity it was best to ....look out...
Of course a hundred or more kilometers away it could be entirely different on that part of the mountains..
I'm still working on getting a handle on patterns here since my last move.. Like said.. Just being observant and a simple log book can get you a long ways with knowing weather..
--- Funny trivia side note.. My grandfather Clay had a crude barometer out of 2 Coca Cola soda bottles glued mouth to mouth with some colored water.. When the height of the water got to a certain point everything stopped and it was time to go fishing.. He was usually right..
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Post by Stealth on Nov 15, 2023 8:34:45 GMT 10
While I love the gorgeous weather station that my father in law made for us, I don't need it to tell when a storm is coming. The pain in my knees lets me know that 😅. But it's very handy for showing specifics and giving us an idea of what kind of weather is incoming. It also drives a lot of nostalgia for me because I have fond memories of my grandmother tapping her barometer every morning when we stayed with her as kids.
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malewithatail
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Post by malewithatail on Nov 15, 2023 10:18:59 GMT 10
The pony's let us know its gonna rain, and sometimes we know its gonna be bad when the cows turn up as well in road paddock. It has a large shed arrangement that keeps them all dry. The pony's were there this morning, so rain probably after lunch.
The Electrometer is at present showing a disturbed trace, so the atmosphere is unstable. The trend is still towards fine weather the last time I looked. The trace is positive fine weather, but oscillating around about 300 volts. Its a very high impedance source, so unless its actually storming, there is no danger of a shock from the sensing wire, but the +/- 600 volts DC (1,200 volts total), in the electrometer is another matter ! Ask me how I know !
The instrument can also detect meteor showers as they ionize the atmosphere and create a unique pattern, as well as CME's, as they disturb the earths electric field as well.
Its very old school technology, that I built over 40 years ago, and based on a 6U7 radio pentode valve, running on +/- 600 volts dc, and in a balanced bridge arrangement. If the bridge gets unbalanced then it show as a voltage on the cathode that changes from the zero point, either + or - according to the atmospheric charge. The grid (G1), is connected to a long, well insulated sensing wire about 20 meters long. Grid no's 2 and 3 are tied to the plate, that is connected to one end of the 1,200 volts DC supply. A sensitive micro ammeter is connected to earth from the cathode, and it is connected to the other end of the 1,200 volt dc. The duty is not onerous and the valve is drawing about 1 ma of plate current. The filament is under-run at 5 volts instead of 6.3v to minimize secondary emission, and the valve is in a light tight metal shield to prevent photo electric effects of electrons being knocked from the plate by light photons from interfering with the measurements. Yes, its that sensitive. Its still the original valve and other miscellaneous parts, the only difference is that now I run a 4 channel Dataq data logger and notebook PC instead of a paper chart recorder.
Sensitivity is such that I can out-forecast the weather beuro ! And when I was at yellow Rock, I visited the Darlinhurst Weather beuro severe weather section a few times to discuss the results with a forecaster. The outcome of that was an Australian patient.
Remember that 40 + years ago, high voltage semi conductors were very, very expensive and not reliable, hence the reason for the radio valve. Also, deliberately observing lightning discharges is a very nasty environment to expect equipment, especially home made and designed stuff, to work in. I can differentiate between cloud to cloud and cloud to ground discharges, as well as 'see' the buildup to a storm well before weather radar has anything to 'lock' on to, and sometimes many hours earlier than the Beuro.
The forecasters were pretty impressed with the concept and chart recordings at that time, but radar won out as it was mainstream technology.
Anyway, the gear got me my Engineering Degree thesis, and without a functioning weather beuro after TSHTF, it will be a valuable piece of tech to have. The alarm output from the datalogger is connected to a small buzzer, which chirps when there is a electrostatic discharge, and gives adequate warning of a approaching storm, sometimes hours actually.
For the arthritis pains, try CBD oil, the low THC type works amazingly well. A $100 bottle lasts for nearly 3 months using 0.25 ml/day, after tea at night as it can cause some dizziness. See your doctor and get a script for the medicinal stuff. Its much more reliable than the over the counter stuff that varies in potency.
It’s Easier to Fool People Than to Convince Them That They Have Been Fooled.
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Tim Horton
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Post by Tim Horton on Nov 15, 2023 15:36:10 GMT 10
I don't need it to tell when a storm is coming. The pain in my knees lets me know that 😅. -- -- BIG chuckle over that... Aint it the truth.. When my knees and left shoulder start barking the change is always well underway... Has been unseasonably warm, nice this week.. Predicted to last through the weekend.. Highs mid 60s F lows mid 40s F... The peak of the old term ...Indian Summer...
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malewithatail
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Post by malewithatail on Nov 18, 2023 10:10:02 GMT 10
Lied to......again.... strangesounds.org/2023/11/5g-look-at-those-antennas-and-take-them-all-down.html?utm_source=substack&utm_medium=emailIts in the microwave spectrum, dummos..... Your microwave oven outputs about 600 watts, (input 1 KW or so, 50% efficient). Each 5 g cell antenna has an output (and remember, the carrier wave is always transmitted, its just the modulation that varies, how else do you think the phone knows the signal strength ?), of about 600 watts, 3 per mast and that's 1,800 watts total, 1.8 kw. Now, open the door of your microwave oven and stand 50 meters away from it whilst bogeying the safety interlocks and turn it on...... Microwave ovens operate on about 2.45 Ghz, right in the middle of the band. At that range, a led will light up brightly when connected to a 1/4 wave aerial. (2.45 GHZ is about 122 mm full wavelength, so a 30 mm lead connected to each led lead will work as a 1/4 wave aerial. This is the principle of the handheld microwave tester units that you can buy for a few dollars on e bay). If the led lights up around your house, run !!!! Our mobile reception is non existent inside our metal framed and clad house, patchy outside as well, so sometimes crook phone reception is a blessing. We have satellite internet. There are seven shades of dark. Together they are known as a spectrum. The shades are red, orange, yellow, green, blue, indigo and violet. When all the shades of dark in the spectrum are combined they produce black.
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Beno
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Post by Beno on Nov 18, 2023 13:47:07 GMT 10
the thing i don’t like about 5G is it promotes high data flow at the expense of reception range. the original device was supposed for communication via a phone call and not for fast downloads of porn and tik tok videos. In the bush 3G is great. they are removing 3G and replacing with 5G so unless there are towers everywhere the services will be diminished.
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malewithatail
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Post by malewithatail on Nov 18, 2023 17:11:02 GMT 10
Did some work on a Sydney radio station's transmitter site a number of years ago. We didn't need any extra lights for night time work, just held a 4 foot fluro lamp upright and daylight, all on pure RF power from the transmitter. Admittedly I think the output was 50 Kw, but still OHS would have kittens if we did the same today ! The original analogue system just worked, well. I had reliable phone comms over at least 50 km from high spots, but now the distance limit is not the RF power, but the data packets smashing into each other in opposite directions. This limits the ultimate range to 20 km I think, even if you can see the other person. Progress Colored glass will allow all colors of dark to pass through it except its own color. For example, red glass will allow all colors of dark to pass through except red dark. Thus a red darksucker leaves red dark behind.
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Post by Joey on Nov 19, 2023 6:02:29 GMT 10
Did some work on a Sydney radio station's transmitter site a number of years ago. We didn't need any extra lights for night time work, just held a 4 foot fluro lamp upright and daylight, all on pure RF power from the transmitter. Admittedly I think the output was 50 Kw, but still OHS would have kittens if we did the same today ! The original analogue system just worked, well. I had reliable phone comms over at least 50 km from high spots, but now the distance limit is not the RF power, but the data packets smashing into each other in opposite directions. This limits the ultimate range to 20 km I think, even if you can see the other person. Progress Colored glass will allow all colors of dark to pass through it except its own color. For example, red glass will allow all colors of dark to pass through except red dark. Thus a red darksucker leaves red dark behind.
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malewithatail
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Post by malewithatail on Nov 19, 2023 7:56:16 GMT 10
That was 15 kw, try 50 kw !!
Notice the demodulation and hearing the station. that principle, of thermal or arc detection, was around at the turn of the last century. In fact, well before crystal detectors, or even valves, flame detectors were the most sensitive types available.
Off to the tip, then cleaning up the bee van gear ready for next month. Not a bad harvest, 6 drums from 12 hives, of those about 1/2 are double supers and a couple were not doing so well and I didn't take any honey from them. New queens needed.
Darksuckers with colored glass filters are used as traffic lights at intersections.
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