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Adjusting


 

Interesting question, could anyone find information about the values ??of the IC-7000 Main Board L701 Transformer, the coil itself can't be found anywhere, so you have to do it if you don't happen to find something used.
T. Pentti OH5KOA


 

I wish I could help you.? ?I had hoped that someone would have good news for you by now.? ? I assume that L701 is now broken, and that the faulty inductor means that the IC-7000 is now unusable.

If the tuning slug is some kind of iron powder slug that can be removed, I would remove it.? I would then put a miniature trimmer capacitor across the tuned winding, and adjust the trimmer to restore resonance.? (Perhaps the ground side of the trimmer can be soldered to the side of the can?)? Naturally, the Q of the inductor will now be different, but the existing coil and new trimmer might still do the job well enough.? ?

If the inductor in L701 has completely fallen apart, I would attempt to make a new one using a standard inductor, and modifying or re-winding the coils within the standard inductor.

I hope that my suggestions here might prompt others to suggest better ideas.? Good luck!

73
Steve G4ALG


 

Hi Steve.
The problem is that the coil is so small and really broken and its wires are partially cut, so you can't see the turns and how they are on top of each other. However, I was happy to find a company called Radioparts in your country and I think I can still get them brand new from them.
I'll let you know how it goes. 73 Pentti


 

Wow!? Pentti -- Your news is both surprising and exciting.? ?I look forward to hearing more news from you.? 73, Steve.


 

I'm interested in this as well.
Bob W4JFA

On Sat, Nov 30, 2024 at 5:30?AM Steve G4ALG via <steve=[email protected]> wrote:
Wow!? Pentti -- Your news is both surprising and exciting.? ?I look forward to hearing more news from you.? 73, Steve.


 

Update, the coil cans I ordered have arrived and have also been installed. High-quality and functional parts, which I did wait a little while for. The radio now works great. I can recommend the Radioparts store as a place to purchase spare parts for Icom. However, living here in the north, it becomes quite valuable to order inexpensive parts, when shipping costs + VAT + customs are added.
Hobbies cost money.


 

Thank you for this update, Pentti OH5KOA.

This is great news!? ?It was a difficult repair in many ways, and you did very well to find the parts.? ?