Discussion in 'Ham Radio Discussions' started by MW6ZAN, Nov 21, 2020.
No. Why do you think you are receiving burglar alarms?
I won't upload a pic as it will offend the meek on the site, but just to say it offends me every time I look at the dam thing. I would send it back but postage to china would cost more than the dam radio. 73
Huh. Sounds like a tat you’d only get after mass quantities of alcohol.
Sounds more like meth.
Actually, I'd be interested to see any ham radio-related tattoos. Bonus points if they relate to CW.
Bet it doesn't say "Welcome to Jamaica mon, and have an nice day".
"has any one experienced this problem with other 5th generation radios." Yes I have seems they were designed to use the rubber duck and get overloaded
quite easily with an outdoor antenna.... I have added the extended Nagoya whip and its still satisfactory but yeah their front end isnt communications grade.
There is no front end. The Baofengs are pure Digital Signal Processing. If you look at the schematic or a block diagram, there are switchable low pass filters at the antenna port for either VHF or UHF, designed to prevent excess harmonic output at multiples of the transmitter frequency. After passing through one of those, the received RF energy goes directly into the analog to digital converter on the signal chip.
Assuming you select a UHF frequency, all signal energy out of the low pass filter from zero to maybe below 500 MHz are presented to the A/D chip at once. About one billion times per second, the A/D converter produces a single number that represents all the energy of that entire spectrum at that moment. One or more math processors then analyze the resulting stream of numbers, looking for repeating patterns that might represent the desired signal present near 440 MHz. If selecting VHF, the energy might be from zero to 200 MHz through the other harmonic filter.
The information calculated from that stream of RF numbers creates another stream of numbers representing any audio calculated. These numbers go to a D/A converter on the chip which puts out analog audio voltages to the speaker amplifier.
If you overload the chip producing the RF number stream, it loses the ability to reflect smaller changes in the RF energy. The math then calculates the wrong patterns as wrong audio.
I think those are boogaloo alarms. Hot fun in the summer time.
Do you have a WAS burglar alarm cert?