oscilloscope

A test instrument that shows a picture of electrical waveforms by means of a cathode ray tube. An oscilloscope is calibrated so one can measure the instantaneous values and waveforms of electrical signals that are changing rapidly or varying as a function of voltage or time. Also known as a Scope.

I use my oscilloscope to measure the waveforms of my 27 MHz band jamming transmitter.

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Squad 51!

An exclamation, from the 70s show Emergency.

It comes from the fire department dispatch guy that goes "Squad 51!"

"(random DTMF tones) Squad 51! (insert random dramatic event here)

"roger, squad 51, KMG365"

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WGS84

World Geodetic System 1984. WGS 84 is an earth fixed global reference frame, including an earth model. It is used for GPS systems.

The new CAP plane has a nice GPS but no freaking ADF or DME WTF?

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TDMA

Time Division Multiple Access


A method of digital wireless communications transmission allowing a large number of users to access (in sequence) a single radio frequency channel without interference by allocating unique time slots to each user within each channel. Rather than encoding bits of data like CDMA, each frequency is broken into time slots through which bits of data flow. Data can only flow in their assigned time slots.

Cellular (mobile) Phones use CDMA, TDMA, analog, or GSM for radio (voice) transmission as well as wireless internet connections.

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battleship

A fun game that teaches little children to play nice, as well as naval warfare tactics.

B-8!

You sunk my battleship!

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Morse Code

A communications system consisting of letters coded into dots and dashes, and used in radiotelegraph systems. (usally HF systems), and its fun to jam freeband stations with this stuff.

I jammed a pirate radio station with "HELLO HELLO I HATE YOU" in morse code over and over again.

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cuban number station

It is not known exactly what they are there, but its pretty much transmitted enigma in CW mode and then a bunch of numbers (in Spanish) in AM mode. It sounds like a female computer voice.

Cuban number stations can be monitored all across North America.

CUBAN NUMBER STATION COMMON JAMMING FREQUENCIES:

3060 (very common on the 6.6 MHz pirate radio band also)
3090
3292 6867 7648 8790 11215
3410 6872 7682 8873 11468
3444 6888 7726 8980 12144
3926 6890 7743 8992 13373
40176892 7755 9120 13419
4020 6920 7845 9140 14180
4027 6933 7860 9237 14736
4174 6935 7887 9251 14770
4601 6983 7890 9255 14825
4610 6953 8010 9330 17425
4328 6942 8018 9925 17520
4479 6768 6995 8066 10125 18035
5087 6778 7425 8126 10180 18434
5118 6787 7435 8136 10270 20316
5135 6797 7480 8150 10345 21865
5407 6800 7482 8165 10510
5415 6825 7520 8186 10713
5417 6840 7525 8240 10865
5420 6856 7580 8380 11125

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