Kenwood DIP METER DM-81 - How to Add External Modulation - Close Proximity Broadcaster

Sharing a simple method & procedure to add external modulation to my Kenwood DIP METER DM-81 and use it as a close proximity broadcaster as well.
A different approach you might find interesting below.
Oscillator Sniffer | Close Proximity AM Transmitter | Ferrite Antenna Booster
• Oscillator RF Sniffer ...
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#restoreoldradios

[@WECB640]

Tiny Tim is smiling. It is amazing how utterly minimalistic an AM transmitter can be. PS. I have the same GDO and it is great. 73

[@RestoreOldRadios]

It really is! Thanks for watching and reaching out. All the best. Don

[@romjone4801]

I have a Heathkit version of the grid dip meter. I was always wondering about making a coil for the long wave bands.

[@aa1ww]

Nicely done, Don. I too have that same GDO. Great tool for quick intuitive and non-invasive experiments.

[@RestoreOldRadios]

Definitely, the non-invasive approach is a plus. Thanks for watching and reaching out. Best, Don

[@DERB_Seymour_Indiana]

Hey Don. Another example in the art of AM modulation. Very nice. :)

[@RestoreOldRadios]

Thank you Doug. It gave me something to try/do on a cool rainy day. Best, Don

[@erikdenhouter]

🙄 I do not fully understand what you are doing here, tuning with your dip meter.

[@RestoreOldRadios]

Thanks for your question. I’m using the DIP Meter oscillator feature and adding modulation using the secondary coil, germanium diode and Bluetooth receiver. It turns the DIP Meter into a close proximity AM transmitter. Hope this helps. Best, Don

[@erikdenhouter]

@@RestoreOldRadiosYes this helps, thank you ! I was under the impression that the copper coil was mounted on the bread board, but I now see 🧐 it is wound around the dip meter coil.