Wanted "ADMIRAL"

[bonchev2]

Thank You Friend

[bonchev2]

Colleagues, I know it's off topic, but what do you mix the epoxy resin with to make it not transparent? Thanks in advance.

[getsa]

dry paint
ink
talc
sawdust
charcoal powder

[bonchev2]

Thank you getsa

[Zinou]

I'm using this PCB, if there is an error please help

[bonchev2]

PCB is correct my first Admiral is made with this PCB

[CEBRAIL]

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

[CEBRAIL]

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

[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

[getsa]

After some minor experiments & tweaks...
To keep the topic alive...
https://www.youtube.com/watch?v=MsmfUqbpdnI

[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]

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]

with number of turns

[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

[Emersonpaz]

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