Cscope 1220B Schematic

[ivconic]

Ain't that small coin?
I have seen even smaller few times in the past...

[ivconic]

Would be nice curiosity to find out the names of people who were involved in designing this machine!
From time to time we do speak about great engineers who did splendid job so far.
As a great Cscope fan i would like to know more details about people who did designed older Cscope models.
Because, somehow, at present time, Cscope is kind a pushed aside and main focus is turned to other major manufacturers, which is not fair.
Fact is (as i remember) that Cscope was "ruler" at this field, for many years.
Even nowdays their products are nice and high quality (if you ask me; they are between bests today).
Great knowledge involved there.
So, who were those people anyway?
Anybody know details?
Who designed 1220B, Metadec, 3000...etc..etc..?

[satdaveuk]

There you go had this one for years the VLF.TR 990D non motion looks crap but works brilliant paid £5.00 they were produced late seventys early 80s, never took it apart.
If you want to see inside let me know

Regards

[ivconic]

There you go had this one for years the VLF.TR 990D non motion looks crap but works brilliant paid £5.00 they were produced late seventys early 80s, never took it apart.
If you want to see inside let me know

Regards

Isn't it this one?

[ivconic]

Also i had 3000 once.
It is also nice non motion, yet not better than 1220B.

[ivconic]

Also had chance to use and test those two:

[pelanj]

And how did you like them? I am still considering a non-motion detector - I used to have a Whites 3900 and a Viking 5 for a while and I somehow like the way they operated. I would definitely love to have a non-motion machine with interchangeable coil to have a DD and concentric as well.

[ivconic]

And how did you like them? I am still considering a non-motion detector - I used to have a Whites 3900 and a Viking 5 for a while and I somehow like the way they operated. I would definitely love to have a non-motion machine with interchangeable coil to have a DD and concentric as well.

Cscope 770XD and 440XD (had both) are descent machines, yet rather for beginners than for more serious hunting.
Still those are nice, not deep, but yet good enough even for some more experienced prospector.
Old, vintage Metadec 3 is top notch non motion and i would recommend it at first place.
But it is hard to find it these days. Very old and long time discontinued.
1220B would be the second choice, but also old and discontinued.
However, smart guys from Cscope do know that 1220B and Metadec were legendary ones, tough to compete with on "nonmotion" field, so they made this one:

http://www.csmetaldetectors.com/product.aspx?pid=38

1220XD is "analogue" look like one and presents 1220B (Metadec features also) packed in more modern design. Splendid! Haven't seen it yet but intend to buy it in future.

Same features, but in more modern design:

http://www.golddetectors.gr/golddetectors/cs1220ren.htm

So, pick one from those two.
Those still have "old spirit" and will give you full pleasure of nonmotion working.
...
Other hand, White's 3900... not bad, but a bit "deaf" on smaller items, like coins etc...
1220 is more than superior over 3900, no doubts in that.
Viking 5... hmmm... haven't tested it yet, but i seriously doubt that it can compete even Cscope 770XD.

[pelanj]

http://www.csmetaldetectors.com/product.aspx?pid=38

1220XD is "analogue" look like one and presents 1220B (Metadec features also) packed in more modern design. Splendid! Haven't seen it yet but intend to buy it in future.

Same features, but in more modern design:

http://www.golddetectors.gr/golddetectors/cs1220ren.htm

So, pick one from those two.
Those still have "old spirit" and will give you full pleasure of nonmotion working.

I am watching the local advertisments and sometimes a non-motion C.Scope pops up. I was also considering a CS990XD - is that one worth it?

I have also heard that the digital version has some temperature related problems (not working on sunny days) and that it is less powerfull than the XD. Do you know if that is true? I also hate the two piece stem - it will not fit my air travel luggage.

...
Other hand, White's 3900... not bad, but a bit "deaf" on smaller items, like coins etc...
1220 is more than superior over 3900, no doubts in that.
Viking 5... hmmm... haven't tested it yet, but i seriously doubt that it can compete even Cscope 770XD.

Some use the 3900 in searching for WWII relics here. It is quite deep in all metal and on large things. But I agree with you - even a CS1MX on the same place produced many coins.

The Viking is not a bad toy and it is an interresting circuit design, which works OK somewhere but it is not a very great detector.

[ivconic]

I am watching the local advertisments and sometimes a non-motion C.Scope pops up. I was also considering a CS990XD - is that one worth it?

I have also heard that the digital version has some temperature related problems (not working on sunny days) and that it is less powerfull than the XD. Do you know if that is true? I also hate the two piece stem - it will not fit my air travel luggage.



Some use the 3900 in searching for WWII relics here. It is quite deep in all metal and on large things. But I agree with you - even a CS1MX on the same place produced many coins.

The Viking is not a bad toy and it is an interresting circuit design, which works OK somewhere but it is not a very great detector.

Can't tell anything about 990XD because never tested it.
Also about 1220R... can't tell exactly if there is some problem related to low temperatures.
Even so, that problem might be related only to LCD and not to the rest of machine.
LCD may dim temporary due very low temperatures, but i am sure the rest of electronics will continue to work nice.
Just in any case i would choose 1220XD, anyway.

[ivconic]

"...Some use the 3900 in searching for WWII relics here. It is quite deep in all metal and on large things. But I agree with you - even a CS1MX on the same place produced many coins..."

Keep in mind that 1220B (Metadec, 770XD, 440XD, 1220R, 1220XD...and many more from Cscope) are working at 17kHz frequency, while 3900 is somewhere at 6.5kHz as i recall.
That's why is Cscope more sensitive to smaller items.
Another nice fact at Cscope's is that majority of coils are interchangeable between the detectors. It is the same old Isocon coil all the time!
Maybe connectors will not fit, but with few simple changes at it, each coil will match and work just fine with each of mentioned Cscope model.
I've seen dozen Cscope coils so far and all those are pretty the same inside.

[pelanj]

Another nice fact at Cscope's is that majority of coils are interchangeable between the detectors. It is the same old Isocon coil all the time!
Maybe connectors will not fit, but with few simple changes at it, each coil will match and work just fine with each of mentioned Cscope model.
I've seen dozen Cscope coils so far and all those are pretty the same inside.

I have heard some rumours that DETECH is going to produce their SEF coil for the C.Scope machines and even C.Scope is coming up with DD coils on their new CS4MX and CS6MX (I saw those in person ) That would make my dream come true - CS1220XD with a 10-12" DD coil - if that makes any sense

[ivconic]

Yes, that would be good indeed.
Like i said, 1220XD is on my "to buy" list already.
But also the top notch "oldie" Metadec 3.
1220B and Metadec3 are not much different.
But i would like to have it too.
Just missed one at ebay...

[satdaveuk]

Isn't it this one?

It looks like it, have you a circuit diagram for it, also looking for a instruction book, got one from there web site but only the 950 and its similar but not the same,I will take it to bits over the weekend and have a look ok
how do you rate it against other early c-scopes? just wondered because in the 70s early 80s in England the saxon detectors were the ones to have, wish I had kept mine but swaped it for a shot gun.

Regards

[ivconic]

It looks like it, have you a circuit diagram for it, also looking for a instruction book, got one from there web site but only the 950 and its similar but not the same,I will take it to bits over the weekend and have a look ok
how do you rate it against other early c-scopes? just wondered because in the 70s early 80s in England the saxon detectors were the ones to have, wish I had kept mine but swaped it for a shot gun.

Regards

No i don't have schematic. I picked up those photos from internet.
Actually i never had chance to see it and test it.
Rating... wild guess would be that it can be rated somewhere between 770XD and 3000... can't tell exactly.
You will eventually test 1220XD or any other more modern Cscope and than be able to see the details and differences.