ARADO 120 SCH& PCB

[ANDREAS]

Do you remember the variant with electronic capacitor for to helping the tune?

Best regards.

Yes, but is not time for this. We wait the first PCB

[Esteban]

Thank you Esteban, we need here your help.
Finish for me , I wait first PCB and start again in practice
Best regards

Do you remember the variant with electronic capacitor for to helping the tune?

Best regards.

[ANDREAS]

Yes, those are high values capacitors due low frequency, 4.68 Khz.

Best regards

Thank you Esteban, we need here your help.
Finish for me , I wait first PCB and start again in practice
Best regards

[Esteban]

O.K Now i wait first member now , build this. Only in practice i can publish, method calibration this MD.
A tip PCB don't put capacitors C17,C18. We need here for calibration
best regards

Yes, those are high values capacitors due low frequency, 4.68 Khz.

Best regards

[ANDREAS]

This is because you're old as me (50).

O.K Now i wait first member now , build this. Only in practice i can publish, method calibration this MD.
A tip PCB don't put capacitors C17,C18. We need here for calibration
best regards

[Esteban]

Hi Esteban
Do you work Arado with other coils and other osc-freq?
You know i have not free time for modification. Your opinion please
Best regards
Andreas

This is because you're old as me (50).

[Fred]

Thank you andreas for this new project.
It would be nice to see those complete and tested projects all together here, with the essential information on how to build them, like the TGS, DP, surmaster, and now this one, there is probably some more.

[ANDREAS]

No problem if you wish post different coils for differents frequencies too.

Hi Esteban
Do you work Arado with other coils and other osc-freq?
You know i have not free time for modification. Your opinion please
Best regards
Andreas

[ANDREAS]

Yes, Andreas, but I mean for those who have some old factory coils and maybe wish to try it with Arado. They can nothing to rewind only to compare inductance if suit or not.

If you use old coils, it's easy resonate Rx coil, but don't work fine osc. This MD work with antifashe signal 90 degree. All parts are calculation from freq 4-6KHZ. In this size you can make "null" work meter and discrimination , but don't work voice circuit.
It's better make two new coils from this MD. This is only my opinion. You can try and i wish for best results.
best regards

[ANDREAS]

Hello Andreas,
Nice work, just a creasy idée…… can this circuit work as a 2 box ?
Best regards.
Ap

Hi Ap
2-box, create idea, but if work or not i don't know
best regards

[Esteban]

This is not essential. Depending on the diameter coils and knowledge freq-osc
we have different induction for resonate osc-circuit .
Here we want osc work 4,68KHZ
Only we must be try for make out this freq.

No problem if you wish post different coils for differents frequencies too.

[WM6]

This is not essential. Depending on the diameter coils and knowledge freq-osc
we have different induction for resonate osc-circuit .
Here we want osc work 4,68KHZ
Only we must be try for make out this freq.

Yes, Andreas, but I mean for those who have some old factory coils and maybe wish to try it with Arado. They can nothing to rewind only to compare inductance if suit or not.

[ApBerg]

Hello Andreas,
Nice work, just a creasy idée…… can this circuit work as a 2 box ?
Best regards.
Ap

[ANDREAS]

Nice pictures. Can you measure inductance of RX an TX coil?

This is not essential. Depending on the diameter coils and knowledge freq-osc
we have different induction for resonate osc-circuit .
Here we want osc work 4,68KHZ
Only we must be try for make out this freq.

[WM6]

Two photo's

Nice pictures. Can you measure inductance of RX an TX coil?