Wanted "ADMIRAL"

[bonchev2]

Thanks for the reply.

[Toros]

Hello colleagues, maybe my question is a bit stupid but I want to ask what is the difference between MC1458 and LM358 because I replaced it and the result is the same. The bipolar power supply works perfectly with the LM358. thanks in advance

1458 has short-circuit protection.

[andon80]

Thanks for sharing Emersonpaz, have the devices in these files been tested and I need the wire information for the coil

[bonchev2]

Thank you Emerson for sharing this files

[CEBRAIL]

displaced

[CEBRAIL]

bc327 bc337 in admiral, bc327 bc 547 in this diagram, is it working?

[Emersonpaz]

GERBER ADMIRAL V 1.rarGERBER ADMIRAL V 2 TONE.rar

[bonchev2]

Hello colleagues, maybe my question is a bit stupid but I want to ask what is the difference between MC1458 and LM358 because I replaced it and the result is the same. The bipolar power supply works perfectly with the LM358. thanks in advance

[bonchev2]

with number of turns

[getsa]

What are you experimenting with? - with number of turns, or with the physical shape and position of the Rx?
With the selection of 330nF capacitor is achieving the quietest threshold and purest tone at maximum distance.

Greetings!

[bonchev2]

Impressive getsa very good result I am also experimenting with the RX coil and I managed to catch this coin at about 30cm and I thing if I play a little with this 330n on TX I can increase the depth a little more. Congrats for result again.

[getsa]

After some minor experiments & tweaks...
To keep the topic alive...

https://www.youtube.com/watch?v=MsmfUqbpdnI

[CEBRAIL]

tx rx firenkas tx rx firenkas are the same my coils are different tx 50 volt vpp rx tl072 1 pin 250milivolt vpp pcb index according to the schematic

[CEBRAIL]

https://youtube.com/shorts/Ju3k-WxedOE?feature=share

[CEBRAIL]

https://youtube.com/shorts/LsdTswNptX8?feature=share