Listening radio with grass ateijeiro0 2012-12-31 | Two "experimenters" using a radio station like singing arc. You can listen the station in the arc between antenna and grass. A dangerous experiment...
BGO Scintillator irradiated in a LINAC ateijeiro0 2023-10-06 | Several BGO crystals (Bismuth Germanium Oxide, widely used like scintillator in PET tomogpraphs) are irradiated in a LINAC with a 6 MV beam. When beam is ON BGO glows clearly. You can listen during irradiation humming from linac.en.wikipedia.org/wiki/Bismuth_germanate
Radiactive Fiesta ware ateijeiro0 2023-02-17 | Fiesta ware made until mid-20th century is radioactive because we're made using radioactive glazes. Uranium oxide was used to obtain the beaty red of these glazesthoughtco.com/how-radioactive-is-fiesta-ware-608648
ATS-20 ( SI4375 DSP,) on 20m ateijeiro0 2021-08-30 | Checking a receiver ATS-20 based on chip SI4375 DSP, this chip is enable to receive SW with diferente modes (AM, USB and LSB) with diferent bandwidth, here receiving in 20 m band
Regenerativo 3 válvulas 1t4 ateijeiro0 2021-06-09 | He creado este vídeo con el Editor de vídeo de YouTube (http://www.youtube.com/editor).
Receiver Geloso G4/214 in 20m band ateijeiro0 2021-01-09 | Este v�deo se ha subido desde un tel�fono con Android.
B551C prescaler on FM band ateijeiro0 2021-01-09 | http://pdf.datasheetcatalog.com/datasheets/185/501176_DS.pdf
Listening Vienna new years concert (2018) in a Philips Annette LD462AB (1956) ateijeiro0 2018-01-01 | Listening Vienna new year's concert in a Philips Annette LD462AB (1956)radiomuseum.org/r/philips_annette_ld462ab_ld_462_ab.html
Radiation on a camera-equipped cell phone ateijeiro0 2017-08-04 | In this video is shown the effect of a beta radiation (Strontium-90 source) on CCD camera in a cell phone. Radiation is shown like spots in a dark background. This effect is used in some Android applications to "measure" radiation.
Testing a FM tuner using the intermediate frequency in a cheap receiver ateijeiro0 2017-06-15 | using a cheap radio receiver (7€) is a suitable method to check a tube FM module with a IF of 10.7 Mhz
Receiving DCF77 (77.5 kHz) using a keenwood r600 ateijeiro0 2015-05-07 | Using an homemade converter to receive DCF77 signal at 77.5 kHz in a HF receiver. DCF77 is a standard time station located near Frankfurt. This station provides a precise and accurate time information
Controlling induction motor speed using ic ir2111 ateijeiro0 2015-04-03 | Este v�deo se ha subido desde un tel�fono con Android.
Sperry gyro compass S3A ateijeiro0 2015-03-23 | A Sperry Gyro compass powered using monophasic current
Concierto de año nuevo 1-1-2015 en un receptor National HRO ateijeiro0 2015-01-01 | Concierto de año nuevo 1-1-2015 en un receptor National HRO
Bromine + Aluminium reaction. ateijeiro0 2014-10-19 | Bromine + Aluminium reaction. Really exothermic!!Reacción de Bromo + Aluminio. "Algo" exotérmica!!
Liesegang rings based on a silver nitrate potassium dichromate reaction ateijeiro0 2014-06-16 | Liesegang rings based on a Silver nitrate potassium dichromate reactionhttp://en.wikipedia.org/wiki/Liesegang_ringshttp://www.edscuola.it/archivio/lre/liesegang_rings.pdfLiesegang rings on spanish edition of "Scientific American":http://www.google.es/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=3&ved=0CDAQFjAC&url=http%3A%2F%2Finfogeologia.files.wordpress.com%2F2011%2F04%2Fmarc_boada.pdf&ei=8bGeU7SWJIKx0QXyn4DoCQ&usg=AFQjCNE5L0yDXmLnBJ3_LvEI0Hz59qzhhA&sig2=nCGKuGGcQtiOBJQObCOzeA&bvm=bv.68911936,d.bGQ
Galena FM Crystal Receiver ateijeiro0 2014-06-16 | A FM crystal receiver based on:http://solomonsmusic.net/FM_CrystalRadio.html
Sporadic VHF propagation 29-05-14 ateijeiro0 2014-06-15 | In my car I listened in the end of may broadcastring from North Africa (Marroc or Algerie). Unfortunally I don't understand arabian and station is unkown for me. Reception was in Galicia (northwest of Spain)
7abp7 radar CRT tube ateijeiro0 2013-09-30 | A CRT tube from a marine radar is shown in video. I simulated the radar trace with an alternative current in the rotating coil.http://www.mif.pg.gda.pl/homepages/frank/sheets/168/7/7ABP7.pdf
Mozarts Requiem on a Freudenstadt 9 Saba Radio ateijeiro0 2013-09-18 | Receiving Mozart's Requiem on a Freudenstadt 9 Saba Radio. Station is RNE Clásica.
Sporadic E Propagation on VHF band. ateijeiro0 2013-08-17 | Listening Italian stations on FM broadcasting band. Radio2 RAI and Deejay radio is shown on RDS display and you can listen italian language. Recepction was near Orense (Spain) on Northwest Spain 2000 km away from Italia!!
µP2000 trainer based on a 8085 microprocessor ateijeiro0 2013-03-29 | µP2000 trainer based on a 8085.A trainer or microcomputer based on a 8085 microprocessor (4K ROM, 4K RAM 8K I/O). Here are shown two small programs: First program: two Registers A,B are added to C and also stored in memory address 1100Assembler HEX CodeMVI A,56 3E 56MVI B,4C 06 4C ADD B 80MOV C,A 4F STA 1100 32 00 11RST CFSecond program: The value stored in register A is transfer to I/O chip (PORT A) switching on/off leds.Assembler HEX CodeMVI A,03 3E 03 OUT 20 D3 20MVI A,AA 3E AAOUT 21 D3 21HLT 76
Fractal: Mandelbrot Set ateijeiro0 2013-03-16 | PLEASE CHANGE RESOLUTION TO HD (1080p) TO IMPROVE QUALITY OF IMAGE.This video is a representation of Mandelbrot set.This Mandelbrot set is defined as the set of all points such that the doing quadratic iteration does not escape to infinity on complex plane. Mandelbrot is a fractal which a fractional dimension.I remember the words of great mathematician Henri Poincaré:"Le savant n'étudie pas la nature parce que cela est utile; il l'étudie parce qu'il y prend plaisir et il y prend plaisir parce qu'elle est belle"(The scientist does not study nature because it is useful to do so. He studies it because he takes pleasure in it, and he takes pleasure in it because it is beautiful)To know more:http://en.wikipedia.org/wiki/Mandelbrot_sethttp://en.wikipedia.org/wiki/Fractalhttp://en.wikipedia.org/wiki/Fractal_dimensionThe classical book "The Beauty of Fractals" by Heinz-Otto Peitgen and Peter Richter. 1986http://en.wikipedia.org/wiki/The_Beauty_of_Fractals"Chaos and Fractals" by Peitgen, Heinz-Otto, Jürgens, Hartmut, Saupe, Dietmar. 2004 Springer
A BPSK31 Beacon based on AD9850 DDS ateijeiro0 2013-02-24 | The AD9850 DDS is Direct Digital Synthesizer which can provide us with a easy programming in a PIC or Arduino interface a stable phase and frequency signal. Using a AD9850 controlled with a 16F628a, a BPSK31 Beacon has been made in 40m amateur band 7030 Khz, It's shown my callsign.This a first version like change of phase is directly on carrier this "quick" change of phase results in "key clicks" and a wasteful of spectrum. My next version will try to obtain a bandwith as narrow as 31.25 Hz.in the end of the video you can see the same message transmitted in BPSK125 code
An old car spark coil generating about 15KV ateijeiro0 2013-01-29 | An old car spark coil generating about 15KV. An clasical IC 555 generates a square wave with a variable frequency (270-660 hz), this signal drives a mosfet to switch current thought coil generating high voltage. You can listen a tone (known like "singing arc" in the begining days of the wireless transmission) and how varies its tone with frequency. At the end of the video spark thought a xenon flash tube is shown.
Philips Factory Thirties ateijeiro0 2013-01-29 | An interesting documentary about Philips Radio factory.
Neon ring counter ateijeiro0 2012-10-06 | A neon ring counter, A counter based on neon.There are interesting projects on net based in this counter:http://wwwhome.cs.utwente.nl/~ptdeboer/ham/neonclock/One of my favorites :http://www.dos4ever.com/ring/ring.html
Multiflex Galvanometer ateijeiro0 2012-09-01 | A mirror galvanometer from ¿fifties? is checked here.If you have any information about this galvanometer, please shared here.
Spanish version of Davids midnight magic for a commodore 64 ateijeiro0 2012-08-26 | Spanish version (load'n'run) of David's midnight magic for commodore 64.
Nixies Voltmeter VM1335 ateijeiro0 2012-08-26 | A nixies voltmeter model Voltmetre VM1335 (Société d'instrumentation Schlumberger) is shown. It's a discrete components voltmeter (I didn't see any IC!). If you share any information, manual or schematics will be appreciated!.
Quartz fiber dosimeter ateijeiro0 2012-08-25 | Old Quartz fiber dosimeters and chargers. http://en.wikipedia.org/wiki/Quartz_fiber_dosimeterOriginal patent:http://www.google.com/patents/US2648777
Soviet Receivers VEF206 VEF201 and VEF202 ateijeiro0 2012-08-08 | Receivers VEF206 VEF201 and VEF202. These radios are good multiband receivers made in Soviet Union during 60s and 70shttp://www.radiomuseum.org/r/vef_vef_206.htmlhttp://www.radiomuseum.org/r/vef_vef_202.htmlhttp://www.radiomuseum.org/r/vef_vef_201.htmlhttp://dusty-attic.narod.ru/Shems.html
Type 804-B UHF Signal Generator ateijeiro0 2012-08-05 | Type 804-B Generator UHF Signal Generator. This generator covers from 7.6 Mhz to 330 Mhz using a 955 acorn tube like uhf oscillator. In this video you can listen a radio station at 94 Mhz and during seconds the signal from generator at that frequency. Manual here and more documentation here:http://www.k7jrl.com/pub/manuals/gr/804b/804b.pdfhttp://www.ietlabs.com/pdf/GR_Experimenters/1941/GenRad_Experimenter_Feb_1941.pdf
Acorn tube 955 FM oscillator ateijeiro0 2012-08-05 | Using a 955 acorn triode a Hartley oscillator has been made. http://www.jogis-roehrenbude.de/Roehren-Geschichtliches/P2000/955.pdf
RT-159/URC4 Rescue Radio Transceiver ateijeiro0 2012-07-30 | A video showing the RT-159/URC-4 Rescue Radio transceiver used during korean war. The URC-4 set is a tube transceiver. Dual channel, VHF/UHF SAR rescue radio receiver/transmitter, Xtal controlled 121,5 / 243 MHz. 35mW RF output power, 10uV sensitivity. AM/MCV emission. Tubes 3Q5 2E32 6050 6147.At the end of the video you can see one URC-4 transmitting and other receiving.I'm looking for technical manual or any technical information. it will be grateful for any information about this equipment.
Radio Tesla Talisman 306 ateijeiro0 2012-07-15 | One of my favorite radio receivers: the Talisman 306 made by Tesla in Czechoslovakia. In the end (1:08) of the video you can listen strong and clear the voice of Russia from Moscow.
Oscillator ARN21 ateijeiro0 2012-05-02 | This is the local oscillator (42 Mhz)from an old aircraft bearing system AN/ARN21. Local Oscillator has 42 crystals working in 27th harmonic to provide 1067 to 1109 Mhz (84 frequencies with 1 Mhz separation) mixing with the signal of this oscillator, band is expanded to 1025-1150 Mhz..I'd like to have the schematics of this equipment to do more experiences with spares...
Photomultiplier used like photocell ateijeiro0 2012-05-01 | A ¿hamamatsu? photomultiplier used like photocell. Polarizing first dynode with low voltage (about 10 Volts) thought a 100 k resistor it's possible to measure light (photocathode emits electrons when illuminated). In fact it's possible to measured a 100 Hz signal on scope from light bulb fluctuations.
Photomultiplier Siemens orbiter ateijeiro0 2012-05-01 | This is a photomultiplier tube from a 80's Siemens Orbiter Gammacamera. I haven't reference about this tube, I think that it's a Hamamatsu tube but I'm not sure at all. It has 8 dynodes and it's supplied applying -1500 V to cathode and anode grounded to avoid high voltages to preamplifier circuit. Please any type of information will be appreciated.http://sales.hamamatsu.com/assets/pdf/catsandguides/PMT_82-87.pdf
Tunnel diode transmitter ateijeiro0 2012-04-29 | 89 Mhz Oscillator based on a russian tunnel diode 3И306Г (3I306G). A 1khz signal is applied to diode, in a tunnel diode oscillator a strong dependence of frequency with voltage allow us an easy FM modulation. By other hand a good voltage stabilization is needed for a long time frequency stability.References:http://ia700300.us.archive.org/1/items/GeTunnelDiodeManual/Ge1961TunnelDiodeManual.pdfhttp://ia700407.us.archive.org/4/items/RcaTunnelDiodeManual/Rca1963TunnelDiodeManual.pdf
Astable multivibrator using cold cathode thyratrons тх3б (tkh3) ateijeiro0 2012-04-29 | An astable multivibrator using cold cathode thyratrons тх3б (tkh3). I have several russian cold cathode tubes and sometimes I like to do little circuits with them. This is a little example. PLease if you have documentation about these tubes or occidental equivalents please let me know to share information.References:-http://www.youtube.com/watch?v=yNAWQad35Ds-"LOS TIRATRONES DE CATODO FRÍO",DURAND, M, Biblioteca Técnica Philips, Madrid 1964,-А.М.Ёркин. Лампы с холодным катодом. http://publ.lib.ru/ARCHIVES/M/%27%27Massovaya_radiobiblioteka%27%27/%27%27MRB%27%27,v.0645.(1967).%5Bdjv%5D.zip
Tunnel diode oscillator ateijeiro0 2012-04-28 | 6 Mhz Oscillator using a tunnel diode. References:http://ia700300.us.archive.org/1/items/GeTunnelDiodeManual/Ge1961TunnelDiodeManual.pdfhttp://ia700407.us.archive.org/4/items/RcaTunnelDiodeManual/Rca1963TunnelDiodeManual.pdf
tunnel diode curve ateijeiro0 2012-04-25 | Tunnel diode curve tracer to show negative resistance of this type of diode
Morse code reader Atronics ateijeiro0 2012-04-17 | Morse code reader ATRONICS. I know nothing about this morse code reader, in fact I haven't any information, if you have any type of INFORMATION or DOCUMENTATION related to this morse decoder PLEASE let me know. In this video I "Broadcast" with computer and DM780 soft the CQ with my callsign EA1IIH, you can read it on morse decoder. Message; CQ CQ de EA1IIH EA1IIH CQ CQ de EA1IIH EA1IIH CQ CQ de EA1IIH EA1IIH CQ CQ de EA1IIH EA1IIH PSE K 40 WPM
Heathkit FM stereo tube receiver AJ-12 ateijeiro0 2012-04-15 | Heathkit FM stereo tube receiver AJ-12
RDS decoder based on TDA7330 in a FM stereo tuner heathkit AJ-12 ateijeiro0 2012-04-14 | A FM stereo tuner heathkit AJ-12 with RDS. MPX signal is decoded by a TDA7330 and display using a PIC.
