Link Receiver

[Albert H]

This isn't anything startlingly original, but it works well! I'll put a nice PCB layout up for it if anyone's interested.

Band1LinkRX.png

[radium98]

i am interrested Albert H please in pm if not in public .

[radium98]

Are you around ? Albert H

[Maximus]

Same here Albert, I’d appreciate a PCB layout thanks.


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[Analyser]

So where does one get KACS6400 and KACSK586HM these days?

[radium98]

Strange i dunno know why he does not post what he said .
Analyser isnt thoses the can tank coil of the IF ?please correct me i didnt find that on google image .
MURATA but what ?

[Analyser]

Strange i dunno know why he does not post what he said .
Analyser isnt thoses the can tank coil of the IF ?please correct me i didnt find that on google image .
MURATA but what ?

Yes, they are the coils in the mixer and IF section. They were made by Toko but now discontinued. They are the Toko 10k series.

[radium98]

thanks Analyser for clarification

[Albert H]

The Toko equivalents are still available from Mainline in the UK and plenty of shops in Europe. The ceramic filter (SFE) is available from the same place.

Board layout to follow.

[Analyser]

The Toko equivalents are still available from Mainline in the UK and plenty of shops in Europe. The ceramic filter (SFE) is available from the same place.

Board layout to follow.

Can't find any on the Mainline website https://www.mainline-group.com/.

Which shops in Europe?

[Albert H]

Stone me - another supplier gone. Mainline used to be quite useful.

The last coils I got were from bec.co.uk. I found two suppliers in France and one in the Netherlands, but they don't seem to stock these coils any more....

[radium98]

NIce to hear that albert that pcb to follow

[Analyser]

Stone me - another supplier gone. Mainline used to be quite useful.

The last coils I got were from bec.co.uk. I found two suppliers in France and one in the Netherlands, but they don't seem to stock these coils any more....

I think Mainline are still around but became "Mainline group" a few years ago. They seem to have ditched a lot of the surplus goodies they were famous for.

Those coils are becoming hard to find now, hence me asking in the first place. Actually BEC do have stock but they are asking £15 each which means they don't really want anyone to buy any.

[Analyser]

NIce to hear that albert that pcb to follow

PCB is not much use unless you can get those two coils or equivalents.

[s2000]

I think the company had a big fire years back and a lot of gear was lost, they used to have lots of goodies like Mitsumi satcans and small c&k gunnplexers

Mainline are on Ebay too, lots of stuff available

[mordhau]

NIce to hear that albert that pcb to follow

PCB is not much use unless you can get those two coils or equivalents.

KACS K586HM is a simple 10.7MHz discriminator can with unloaded Q of 100 and 82pF internal capacitor.

KACS 6400A is one of those orange-screw cans (originally meant for 2nd or 3rd IF stage), and if I'm not mistaken, has P:S turns ratio 6:1 or 7:1, 47pF internal cap and claimed Qu of 80 minimum. Xicon 42IF122-RC might be the closest thing to a cross as far as obtainable parts go; the same IF can is also suitable to use as the quadcoil (IC pins 9, 10). Parallel resistor value might need to be slightly adjusted then for intended audio level ( or not at all).

Hope that helps in finding the right substitute parts.

[radium98]

Thoses tank .

[radium98]

sorry for the missed upload picture
are you talking about theses tank coils or i am mistaken .

[mordhau]

Tank = LC resonant circuit. So, K586HM is an adjustable LC tank, yeah. That is, with shielding and good temperature stability. But the other Toko can is not merely an adjustable tank, it's an IF xformer with resonant primary side.

---
The one on the picture with orange screw cup core might be good for 10,7MHz IF stage or mixer output coil. But then again, different (non-Japanese?) manufacturers use different color schemes, so it's just an unreliable hint about the intended application.

[radium98]

mordhau thank you

as albert h promisse ?