I'm inclined to refrain from saying precisely what models not yet released are going to be exactly, since in most cases the primary reason why a model is not released is because changes are being made. Marketing dept. is in the awkward position of having to tell potential customers what an announced but not yet shipping product "really is" and they occasional get bit. Comes with the territory. Nobody knows for absolute certain what a product is until they've swung it for 5 years, and even then someone else who has swung the same model for 5 years will argue about details.
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Meanwhile, back at the ranch in old El Paso, I think I hear urban mythology arising from the ashes again. The one about "searchcoil frequency". I get tired of this, but dealing with stuff like this is part of my job.
The original Gold Bug designed back in the 1980's ran at 19.2 kHz had a circuit and searchcoil design which were Fisher state of the art at that time. Note that this was well over 20 years ago. A lot has happened since then.
The Gold Bug II released in 1995 ran at 71 kHz and used a circuit and searchcoil design which were Fisher state of the art at that time. That was 15 years ago. A lot has happened since then. Even so, the Fisher state of the art 15 years ago was so advanced that the Gold Bug II is still a popular machine and still almost universally acknowledged as "the hottest on the tiny stuff".
The "new" Gold Bug platform was developed in 2009 and is undergoing some refinement and model diversification in 2010. Everything shipped so far from this platform has run at the same frequency, 19.2 kHz, and future models based on this platform which have already been announced will also run at 19.2 kHz.
This platform uses DD searchcoils from the "Frat Brothers" Tek series. There are currently two-- 5 inch round and 11 inch elliptical. Anyone who thinks we don't know how to make a searchcoil work at more than one frequency (the CZ's have been in production for 19 years, running at 5 and 15 kHz literally at the same time!) should play it safe and buy a Garrett Ace 250-- no, slap my mouth, the Fisher F2 is in the same price range and kyckes its keister! Of course neither machine is in the Omega and Gold Bug league.
As Shenandoah Digger pointed out, if a product is branded Fisher it should have a sticker put on it that says so. Sorry, there have been a few reports that some searchcoils went out without the Fisher sticker, or maybe the sticker fell off. There have also been reports of dealers selling "Frat Brothers" Tek series 11 inch DD's to Gold Bug owners since we have stated that this searchcoil is electrically compatible. If the sticker says Tek, the Gold Bug (as smart as it is) still doesn't realize that the sticker says Tek, it thinks it's a Fisher searchcoil. Not to worry.
--Dave J.
FTP-Fisher