AN/PSS-12 mine detector coil

[Carl-NC]

I just obtained a couple of AN/PSS-12 mine detector coils. The AN/PSS-12 is a PI detector, and the coil has separate TX and RX coils, not inductively balanced. They are (from memory, I did this last night):

TX: 245uH
RX: 455uH

I cut the connector off, stripped the wires, and attached the coil to the new HH Rev D board. I was lazy and stuck 680-ohm damping resistors on both coils, instead of optimizing them. Immediately got an easy 10" (25cm) on my gold ring on the lab bench, noise and all.

This looks like a good coil to use and, at only $10 each, a real bargain. The fellow I bought them from might have more, waitiing to hear back from him.

Will try to post a pic tonight.

- Carl

[Carl-NC]

Here is a pic of the coil connected to HH-RevD. Outer coil (TX) is 10", inner coil about 7-1/4".

Jake has quite a few of these coils, and has some right now (14 May '07) on eBay. Go to http://search.ebay.com/_W0QQsassZjake1960QQhtZ-1.

- Carl

[PhilBarnes]

HH Dual Coil completed (Picture)

This HH uses the AN/PSS-12 coil.

[joecoin]

Using this coil, what values are the damping resistors?

Additionally, is the jumper (for L2) installed?

Thanks,

Joe

[PhilBarnes]

AN/PSS-12 Dual Coil terminations.

Hi Joe

R11 Is 560 Ohms

R14 is 1000 Ohms

I removed the AN/PSS-12 connector to expose the coil leads for hook-up.

Here is how I connected them:

Clear wire - Transmit coil HIGH
Blue wire - Receive coil HIGH
Black and Red wires are common and connect to the center connection of the terminal block

[PhilBarnes]

L2 Jumper

The L2 jumper is required for single coils only.

Do not install for the dual coil AN/PSS-12

[joecoin]

Phil,


Thanks for the info, I really appreciate it.

[PhilBarnes]

Hi Joe

I made an error..

Correction on coil connections.

Clear wire - Transmit coil HIGH
Red wire - Receive coil HIGH
Black and Blue wires are common and connect to the center connection of the terminal block