1929 TNT Ham Radio Transmitter

This is a 1929 style CW transmitter I built using old parts. It uses a type 45 tube and will put out about 2 watts. Right now it is set up for 80 meters, but it can be put on 40 or 20 (if you feel brave enough) by changing the coil set.

Category:

Science & Technology

Tags:

• 1929
• TNT
• transmitter
• amateur
• radio
• ham
• cw
• morse
• code
• telegraph
• wireless
• awa
• qso
• party
• antique
• vintage
• old
• breadboard
• power
• supply
• 80
• 40
• 20
• 160
• meters
• vacuum
• tube
• homebrew
• spark
• hartley
• colpitts
• frequency
• am
• amplitude
• modulation
• modulate
• drift
• receiver
• hallicrafters
• collins
• heathkit
• antenna
• chirp
• signal
• vibroplex
• headphones
• detector
• transformer
• sideband
• ssb
• national
• electron
• tank
• coil
• tuned
• not
• cathode
• anode
• plate
• grid
• rectifier
• triode
• 45
• meter
• oscillator
• capacitor
• hand
• capacitance
• filter

[uniqueandprosperous]

do u know where I might find one or who might build one for me ? J

[amermtrs]

@uniqueandprosperous I don't have any idea where you could find one or who would build one. 72hz is a very low frequency, and I think the only thing that uses a frequency that low is submarines.

[uniqueandprosperous]

sorry more questions .. is there a way to transmit morse on a very low 72hz or 144hz band for only a few ft.

[amermtrs]

@uniqueandprosperous Yep. You would have to find or a build a transmitter for that low frequency. The coils for such a low frequency would have a lot of turns.

[Radiowild]

Nice homebrew QRP! and as a bonus, you could use it as a theremin! RW

[amermtrs]

@Radiowild Haha. I hadn't thought of that, but that would work. It would be the first theremin performance on 80 meters.

[amermtrs]

@uniqueandprosperous The easiest thing to do is find a small AM transmitter. There are several types for sale on the internet. Then feed the beeps into the audio jack on the transmitter.

[uniqueandprosperous]

Forgive me for asking so many questions & thank u for answering but.. what I am trying to learn how to do is send little beeps to a crystal radio set .. but the beeps are too fast to tap out & too slow to sound like music ..would I still need an oscillator..or is there a simpler & cheaper way to send?

[amermtrs]

@uniqueandprosperous If you have a crystal set that will tune shortwave, it would definitely pick up the signal 30 ft away. You wouldn't hear much though because you would need a beat frequency oscillator to beat against the signal and produce a tone.

I do have another video called spark gap transmitter, but there are no tubes in it.

[uniqueandprosperous]

didn't u have a 2nd video where u showed a spark gap in front of the tube .. I can't seem to find it again....thank u