Description
Iron masking is how good targets stay buried: a nail an inch from a silver coin, and a wide coil averages the pair into one sour signal you walk right past. The 5 in / 13 cm Double-D exists to break that average apart. Its tight detection field reads the nail and the coin as two separate targets, so you dig the keeper and leave the junk, in exactly the iron-littered ground where the oldest finds live.
At a glance: genuine Teknetics 5 in / 13 cm Double-D search coil, SCREW-IN (twist-lock) connector, part number 5COIL-TEK. Built for target separation in trash-dense sites and for working spaces a full-size coil cannot enter. Match the connector before ordering; Teknetics also makes a plug-in 5 in / 13 cm coil for different machines.
Every machine it fits, by name
The single most useful thing a coil listing can do is name each host machine outright, so here is the whole roster, including the Fisher machines that share this connector and usually go unlisted elsewhere: Teknetics Alpha 2000, Teknetics Delta 4000, Teknetics Gamma 6000, Teknetics Omega 8500, Teknetics G2+, Teknetics EuroTek Pro, Fisher F11, Fisher F19, Fisher F22, Fisher F44, Fisher Gold Bug, Fisher Gold Bug Pro. First Texas additionally prints the G2, Minuteman and Fisher F5, which we do not stock. The base EuroTek and Digitek are plug-in machines; their small coil is part 5COIL-TEKB, not this one.
Why this coil: separation you can hear
A small coil concentrates its field into a narrow footprint, and that footprint is the tool old homesites, razed foundations, tot lots and iron-strewn farmyards demand. Where a large coil hears one blended tone, the 5 in / 13 cm resolves the individual targets, and it physically reaches where big heads cannot: between tree roots, along fence lines, into foundation corners. Give up ground coverage and raw depth on open land; that is the trade, and it is why this coil pairs with a big one rather than replacing it. Step to the 8 in / 20 cm for everyday balance, the 10 in / 25 cm concentric for open-ground coverage, or the 11 in / 28 cm Double-D for maximum depth. And no filler here about adventure awaiting you: every claim on this page is a printed First Texas fact or a field behavior you can test in one afternoon.
Specifications
| Part number | 5COIL-TEK |
| Type | Double-D search coil, 5 in / 13 cm |
| Connector | SCREW-IN (twist-lock) connector |
| Compatibility | Teknetics Alpha 2000, Teknetics Delta 4000, Teknetics Gamma 6000, Teknetics Omega 8500, Teknetics G2+, Teknetics EuroTek Pro, Fisher F11, Fisher F19, Fisher F22, Fisher F44, Fisher Gold Bug, Fisher Gold Bug Pro. Also fits the Teknetics Minuteman and Fisher F5 (models History Seekers does not stock). Not compatible with the base EuroTek or Digitek (plug-in connector). |
| Weight | Not published by First Texas. We list only verified figures |
Before you order
How do I know my machine takes this coil? Look at your current coil cable: a threaded twist-lock collar means screw-in, and this coil fits. A push-in plug means you own a base EuroTek or Digitek and need the plug-in version instead. The full screw-in host list is printed above.
Does a small coil lose depth? Some, yes, on open ground. In trash it finds MORE, because separation beats raw depth when targets sit close together. Run it as your trash-site coil and keep a larger coil for the open stretches.
Is it safe in shallow water? Submerging the coil head is fine; the control housing must stay dry. Depth ratings vary by host machine, so ring 256-284-2247 and we will confirm yours first.
History Seekers is a small American business and an authorized dealer for the First Texas family of brands, Fisher, Teknetics and Bounty Hunter, all built in El Paso. Detecting is a hiring requirement here, so the person taking your call has dug iron-masked silver with a coil like this one. The story is more important than the artifact.

