Amazing #DIY Electronics Projects with out Valves/Tubes or modern Transistors

Yes, you can make a real CW RF transmitter without a spark gap, Tube or Transistor.

This site has many interesting experiments using homemade active devices.

Well, you will just have to go to the site yourself a see all the cool stuff. Also understanding these experiments is a rue education in Electronics, Chemistry, and Physics.

Cool Homemade Stuff etc.

I have saved this site in Archive.org for a permenate reference

Here is the Link.

 https://web.archive.org/web/20190402042052/http://www.sparkbangbuzz.com/index.html

RTL-SDR Software Defined Radio USB Dongles and their many uses.

There are many amazing and useful things one can do with a DVB-T TV Tuner USB Dongle (> $20.00 usd),using the RTL2832U chipset. Plus  a low-cost Tablet or laptop PC.

Like a computer based radio scanner or wideband real-time spectrum analyzer.
Decoding RDS information  



Lexicon:

ADSB = Automatic Dependent Surveillance-Broadcast (ADS-B) is used by aircraft as an alternative to secondary radar. It broadcasts GPS position

DAB = Digital Audio Broadcasting

DVB-T = is an abbreviation for "Digital Video Broadcasting — Terrestrial"; it is the DVB European-based consortium standard for the broadcast transmission of digital terrestrial television that was first published in 1997 and first broadcast in the UK in 1998.
FM = Frequency Modulation

RDS =Radio Data System (RDS) is a communications protocol standard for embedding small amounts of digital information in conventional FM radio broadcasts.

RTL = IC manufactor Realtek

SDR = Software defined radio



Good Links:

Our Facebook Group:
https://www.facebook.com/groups/TeasingTesla/

RTL2832 Datasheet – RTL2832U Realtek QFN 48Pinhttp://www.datasheetcafe.com/rtl2832-datasheet-pdf/

Spectrum Analyzer using RDT-SRL dongel and Linux Beaglebone Black board.
https://www.youtube.com/watch?v=6YhrKMBrJ2g

Spectrum Analyzer using Android phone.
https://www.youtube.com/watch?v=zu-K1Sslw1Q

Beaglebone Black
https://beagleboard.org/black

rtldsr.org  Wiki

www.rtl-sdr.com

https://en.wikipedia.org/wiki/Radio_Data_System


The Hobbyists Guide To RTL-SDR - Carl Laufer.pdf
http://www.qsl.net/yo4tnv/docs/The%20Hobbyists%20Guide%20To%20RTL-SDR%20-%20Carl%20Laufer.pdf


A list of other Uses:

>>
AIS
 Trunked Radio
 Police/EMS Scanner (P25/TETRA/Analogue)
 Weather Satellites
 HF Reception
 Filter & VSWR Meter
 L-Band Satellites
 Radio Astronomy
 Air Traffic Control
 ACARS
 Weather Balloons
 Reverse Engineering
 Monitoring Pagers
 Amateur/Professional Research
 VHF Amateur Radio (APRS/Voice etc)
 Panadapter
 General Signal Browsing
 Passive Radar, Direction Finding, Coherent Experiments<<

>>

What are some RTL-SDR Radio Scanner Applications?

The RTL-SDR can be used as a wide band radio scanner. Applications include:

• Listening to unencrypted Police/Ambulance/Fire/EMS conversations.
• Listening to aircraft traffic control conversations.
• Tracking aircraft positions like a radar with ADSB decoding.
• Decoding aircraft ACARS short messages.
• Scanning trunking radio conversations.
• Decoding unencrypted digital voice transmissions.
• Tracking maritime boat positions like a radar with AIS decoding.
• Decoding POCSAG/FLEX pager traffic.
• Scanning for cordless phones and baby monitors.
• Tracking and receiving meteorological agency launched weather balloon data.
• Tracking your own self launched high altitude balloon for payload recovery.
• Receiving wireless temperature sensors and wireless power meter sensors.
• Listening to VHF amateur radio.
• Decoding ham radio APRS packets.
• Watching analogue broadcast TV.
• Sniffing GSM signals.
• Using rtl-sdr on your Android device as a portable radio scanner.
• Receiving GPS signals and decoding them.
• Using rtl-sdr as a spectrum analyzer.
• Receiving NOAA weather satellite images.
• Listening to satellites and the ISS.
• Radio astronomy.
• Monitoring meteor scatter.
• Listening to FM radio, and decoding RDS information.
• Listening to DAB broadcast radio.
• Use rtl-sdr as a panadapter for your traditional hardware radio.
• Decoding taxi mobile data terminal signals.
• Use rtl-sdr as a high quality entropy source for random number generation.
• Use rtl-sdr as a noise figure indicator.
• Reverse engineering unknown protocols.
• Triangulating the source of a signal.
• Searching for RF noise sources.
• Characterizing RF filters and measuring antenna SWR.

Furthermore, with an upconverter or direct sampling mod to receive HF signals the applications are expanded to:

• Listening to amateur radio hams on SSB with LSB/USB modulation.
• Decoding digital amateur radio ham communications such as CW/PSK/RTTY/SSTV.
• Receiving HF weatherfax.
• Receiving digital radio monodial shortwave radio (DRM).
• Listening to international shortwave radio.
• Looking for RADAR signals like over the horizon (OTH) radar, and HAARP signals.
  Ref. www.rtl-sdr.com<<
  
  
  FYI this is a living blog and may be updated many times.
• 
  

R: DIY Web Sites Blog Sites Resource Sites and Link Sites

Here we will share different Web sites, Blogs and Resources for the DIY in us all.



Radio::

1)  Dave's Homemade Radios

http://makearadio.com/

2) Hack a Day.All sorts of interesting stuff.
http://hackaday.com/

3) Amature Radilo
http://www.n4xy.com/index.htm

4) SITE of LLOYD BUTLER VK5BR (Meters and Testing circiuts and help)
http://users.tpg.com.au/users/ldbutler/index.htm

5) Measuring tool links.
http://home.kpn.nl/a.van.waarde/id14.htm

6) Grid Dip Meters (while most of the sites have Grid Dip meters Info, that is all this site has).
http://griddipmeter.com/default.html




Super Links Mixed Bag sites::

1) To much to discribe just dig in!
http://www.jumpjet.info/#menu


Electronics Tutorials::

1) WWW.ELECTRONICS-TUTORIALS.COM

2) http://www.allaboutcircuits.com/

R: DIY Web Sites Blog Sites Resource Sites and Link Sites

Here we will share different Web sites, Blogs and Resources for the DIY in us all.



Radio::

1)  Dave's Homemade Radios

http://makearadio.com/

2) Hack a Day.All sorts of interesting stuff.
http://hackaday.com/


Super Links Mixed Bag sites::

1) To much to discribe just dig in!
http://www.jumpjet.info/#menu

Here we will share different Web sites, Blogs and Resources for the DIY in us all.



Radio::

1)  Dave's Homemade Radios

http://makearadio.com/

2) Hack a Day.All sorts of interesting stuff.
http://hackaday.com/

Surplus and Cheap Parts Links

1)  http://www.banggood.com/


2)

3)

Our Facebook Group:
https://www.facebook.com/groups/TeasingTesla/

Our Sister Blogs:
First Principles & Founders of Modern Sciences Introduction
http://fuirstprinciples.blogspot.com/

Please help us keep going by clicking on a ad in the blogs each time you read the,
It earns us a few pennies (no need to buy, just give it a quick look).

R: Some of our expanded subjects besides Tesla

We are adding homemade; Semiconductors, Vacuum Valves, Condensers / Capacitors, Rectifiers [Diodes (Liquide, Cat Whisker etc), Batteries and electric / electronics parts of all kinds . Plus old time Crystal Set and other Radios and Transmitters.

This also where we will discuss all the Past Masters of our modern Sciences.

To this group. All no matter what skill or no skill level are invited to Join.

Our Facebook Group:
https://www.facebook.com/groups/TeasingTesla/

Our Sister Blogs:
First Principles & Founders of Modern Sciences Introduction
http://fuirstprinciples.blogspot.com/

Please help us keep going by clicking on a ad in the blogs each time you read the,
It earns us a few pennies (no need to buy, just give it a quick look).