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Title: Size isn't everything Post by: Chef Geoff on May 06, 2012, 06:50:37 PM It's been 3 week since I got out to do a proper bit of stick wiggling :D And the weather has conspired to stop me, not only in keeping me in but the Maize fields are still rough plough and the pasture has grown like mad so my land is very limited.
This morning I decided that if I was going to get out, the weather forecast said "today's the day". I had the choice of either field boundaries (boring) or one 10 acre field that I did try a little while ago but gave up after only an hour, as it was so mineralised with the underlying iron ore. The reason this field is still available is that the farmer didn't spray it and the wireworm has eaten all the wheat seed, with some help from the local rabbit population ;) With the grotty mineralisation on a lot of my farms, earlier in the week I bought a 7 1/2" Minelab coil in the hope that the smaller foot print would cut down the almost continues iron signals. Did it work?........................Oh yessssssssssssssssssss ??? Penny York mint (http://i693.photobucket.com/albums/vv294/Chef_02/Finds%202012%20Somerset/300312068.jpg) Edward I Penny, Bristol mint (http://i693.photobucket.com/albums/vv294/Chef_02/Finds%202012%20Somerset/300312069.jpg) William III Shilling (http://i693.photobucket.com/albums/vv294/Chef_02/Finds%202012%20Somerset/300312070.jpg) 18thC Cufflink (http://i693.photobucket.com/albums/vv294/Chef_02/Finds%202012%20Somerset/300312072.jpg) Henry VI Halfpenny (http://i693.photobucket.com/albums/vv294/Chef_02/Finds%202012%20Somerset/300312074.jpg) And all this came from the area between the detector and the hedgerow (http://i693.photobucket.com/albums/vv294/Chef_02/300312075.jpg) While that end of the field is I think going to be the most productive as it's adjoining the road, I still have quite a bit to go lol (http://i693.photobucket.com/albums/vv294/Chef_02/300312076.jpg) So the plan is to continue with the small coil and then go over the thirds with the Ultimate in all metal. With the small coil the 10 acres looks awfully big :D (http://i693.photobucket.com/albums/vv294/Chef_02/300312073.jpg) Title: Re: Size isn't everything Post by: handyman [Alan} on May 06, 2012, 06:52:46 PM excellent work there young Chef .... nicely winkled.
well done indeed. Title: Re: Size isn't everything Post by: Mike on May 06, 2012, 06:54:59 PM well done indeed mate
Title: Re: Size isn't everything Post by: gijan on May 06, 2012, 06:57:27 PM yes sir cracking finds..... ::)
Title: Re: Size isn't everything Post by: WeCan-Octavian on May 06, 2012, 07:06:04 PM Well done that man
Title: Re: Size isn't everything Post by: Roman (Ray) on May 06, 2012, 07:35:45 PM great stuff cheffy.4 great coins cant fault you mate.and well deserved.
raymondoo. Title: Re: Size isn't everything Post by: The Doc on May 06, 2012, 07:40:45 PM Well done Geoff.
Any chance of some more pics with both sides of the hammereds? Title: Re: Size isn't everything Post by: nfl on May 06, 2012, 08:34:00 PM nice finds there geoff
Title: Re: Size isn't everything Post by: waltonbasinman on May 06, 2012, 08:38:32 PM Excellent work young Geoffrey. 8)
Title: Re: Size isn't everything Post by: Chef Geoff on May 06, 2012, 09:50:33 PM Here you go Peter, not much to go on I'm afraid :-\
Title: Re: Size isn't everything Post by: Techony on May 07, 2012, 07:16:42 AM Wahay, woohoo !!! About time too Mr. Chef ;D ;D ;D
Well done Geoff, glad to see you haven't lost your touch. Some nice little hammies there. Title: Re: Size isn't everything Post by: wayno on May 07, 2012, 09:19:08 AM Well done Geoff the small coil payed off then mate
Title: Re: Size isn't everything Post by: peanut on May 07, 2012, 10:19:13 AM very nice indeed Geoff !
That certainly makes up for the past few weeks doesn't it. ;) I used an 8" coil on my Minelab many years ago and found it frustratingly slow . It certainly pays to have some patience. Title: Re: Size isn't everything Post by: Chef Geoff on May 07, 2012, 11:52:19 AM "frustratingly slow"... That's it, I knew there was a term I could use without swearing ;D
Very! Nick, the small area you can see, I covered in rows and took about 4 hours and I know that by the time I did the last 2 or 3, I was beginning to miss bits and had to force myself to slow down. But I can't fault it, it certainly did what I hoped. When I've covered an equal area, I will try the large coil and see "if" it will find any deeper signals. ;) Title: Re: Size isn't everything Post by: roger g on May 07, 2012, 02:54:45 PM Very nice Geoff ;D
Title: Re: Size isn't everything Post by: The Doc on May 07, 2012, 03:22:02 PM Here you go Peter, not much to go on I'm afraid :-\ They're nice finds Geoff! The first is an Edward I Bristol mint penny, second I can only confirm as a York mint penny of uncertain reign, and the last is a Henry VI cross-pellet issue halfpenny. Title: Re: Size isn't everything Post by: Chef Geoff on May 07, 2012, 04:22:25 PM Thank you Peter, your a star.....as usual ;)
Title: Re: Size isn't everything Post by: Mungo on May 07, 2012, 07:27:03 PM well done Geoff.......... ;D
Title: Re: Size isn't everything Post by: bumpyjon on May 07, 2012, 08:13:34 PM Well done mate :)
Title: Re: Size isn't everything Post by: peanut on May 08, 2012, 03:17:07 PM "frustratingly slow"... That's it, I knew there was a term I could use without swearing ;D Very! Nick, the small area you can see, I covered in rows and took about 4 hours and I know that by the time I did the last 2 or 3, I was beginning to miss bits and had to force myself to slow down. But I can't fault it, it certainly did what I hoped. When I've covered an equal area, I will try the large coil and see "if" it will find any deeper signals. ;) at that rate.... it looks to me like you're going to be in need of some help Geoff m'lad ..... nod nod.. wink .w... ;D I spent 3.0 hours sweeping the edge of a potato plot on Monday and I only managed a scant 200 feet ::) I was dying to try fieldwalking the furrows but farmer Robert was watching me from the farmhouse like a hawk lol I love walking freshly ploughed soil, you can tell so much about the history of a site from dating the surface pottery and tile etc. Title: Re: Size isn't everything Post by: Pipster on May 10, 2012, 08:47:53 AM Well done Geoff ;) ummmm 7-3 now .... best I get myself out, :D nice haul of silver ( loving the 7.5 coil ).... Hopefully we can get out next week .... ::)
Title: Re: Size isn't everything Post by: DEADLOCK on May 17, 2012, 07:00:37 AM Well done chef great finds mr
Title: Re: Size isn't everything Post by: Dale on June 20, 2014, 06:37:34 PM Great result Geoff, I may try my 9x8 this year over the Roman area to see what it produces, its not been used yet but its worth a shot ;)
Title: Re: Size isn't everything Post by: celticspikey on June 20, 2014, 07:14:22 PM It's been 3 week since I got out to do a proper bit of stick wiggling :D And the weather has conspired to stop me, not only in keeping me in but the Maize fields are still rough plough and the pasture has grown like mad so my land is very limited. Great work Geoff, nice pictures mate and that little field just looks like it holds decent finds ;) ;)This morning I decided that if I was going to get out, the weather forecast said "today's the day". I had the choice of either field boundaries (boring) or one 10 acre field that I did try a little while ago but gave up after only an hour, as it was so mineralised with the underlying iron ore. The reason this field is still available is that the farmer didn't spray it and the wireworm has eaten all the wheat seed, with some help from the local rabbit population ;) With the grotty mineralisation on a lot of my farms, earlier in the week I bought a 7 1/2" Minelab coil in the hope that the smaller foot print would cut down the almost continues iron signals. Did it work?........................Oh yessssssssssssssssssss ??? Penny York mint ([url]http://i693.photobucket.com/albums/vv294/Chef_02/Finds%202012%20Somerset/300312068.jpg[/url]) Edward I Penny, Bristol mint ([url]http://i693.photobucket.com/albums/vv294/Chef_02/Finds%202012%20Somerset/300312069.jpg[/url]) William III Shilling ([url]http://i693.photobucket.com/albums/vv294/Chef_02/Finds%202012%20Somerset/300312070.jpg[/url]) 18thC Cufflink ([url]http://i693.photobucket.com/albums/vv294/Chef_02/Finds%202012%20Somerset/300312072.jpg[/url]) Henry VI Halfpenny ([url]http://i693.photobucket.com/albums/vv294/Chef_02/Finds%202012%20Somerset/300312074.jpg[/url]) And all this came from the area between the detector and the hedgerow ([url]http://i693.photobucket.com/albums/vv294/Chef_02/300312075.jpg[/url]) While that end of the field is I think going to be the most productive as it's adjoining the road, I still have quite a bit to go lol ([url]http://i693.photobucket.com/albums/vv294/Chef_02/300312076.jpg[/url]) So the plan is to continue with the small coil and then go over the thirds with the Ultimate in all metal. With the small coil the 10 acres looks awfully big :D ([url]http://i693.photobucket.com/albums/vv294/Chef_02/300312073.jpg[/url]) Title: Re: Size isn't everything Post by: probono on June 20, 2014, 08:13:46 PM I saw the first coin, and then the realisation you had all the others too - that's some going - and perseverance - but it also shows (yet again) the benefit of gridding, slow and steady
Title: Re: Size isn't everything Post by: david995 on June 21, 2014, 07:45:12 AM Hi geoff ,
i was interested to read you have land with high iron content , i have recently a new farm and its so mineralised the pinpointer goes off on the soil i have an explorer se which has no manual auto ground balance and i am really struggling , i could use a smaller coil i have a 15" wot on it at the mo ,i went down to a 12 sef but no difference i have only one line of discrimination i cant get a steady threshold tone untill i drop sensitivety to around 17 which at that point im not sure how effective the machine is or i could run in all metal at higher sensitivity and put up with lots of noise but at least nothing would be nulled out i tried it with a higher sensitivity and was getting hardly any threashold tone ( 1 line discrim )and i am finding stuff like that but im not sure how much the machine is missing any ideas would be great its easier on the ears if i drop the gain a bit , but again will then be missing deeper small targets any one else any suggestions a different machine perhaps or any good settings to help ? Title: Re: Size isn't everything Post by: Chef Geoff on June 21, 2014, 08:53:03 AM Hi David, I would honestly look at a smaller coil either the small Minelab, 8x6 SEF or Coiltek Joey but this is only going to "get you by" rather than solve the problem, you can try setting your noise cancel to a low channel (1, 2 or 3) which makes the machine run at a higher frequency which will help. You've done the obvious turning down the sensitivity and gain to quieten it down, don't worry about the sensitivity always think of it as controlling the size of target not depth as it controls the sensitivity of the returning signal the "power" of the outgoing is always the same.
The answer is to use a higher frequency machine on these sites something around the 18khz range like the G2 though even 14khz work quite well. Title: Re: Size isn't everything Post by: david995 on June 21, 2014, 11:52:21 AM Hi again geoff, thanks for that
i just went out with my girlfriends minelab xterra 705 with a standard stock small coil and it worked fine, so now im at home and going to try it with a larger coil and see if it still works fine .as of course im used to covering the ground with 15" wot so it was painfully slow with the small coil and if it does then i will test it against the explorer to see if there is any depth difference . I was thinking (untill you mentioned frequancy that is ) wether the exterra was working fine either because i had a small coil on it ( so cutting the amount of signals being picked up ) or wether it was a less sensitive machine and was therefore just not picking up the minerisation will test later do you know what freqauncy the xterra would be ? david Title: Re: Size isn't everything Post by: Chef Geoff on June 21, 2014, 12:03:27 PM It depends which coil it has as the Xterra's use V-flex which changes the frequency depending which coil you use, the "standard" coil is usually a 10" dd 7.5khz coil but if you have the gold pack it will probably be an elliptical 18.75khz ;)
Title: Re: Size isn't everything Post by: david995 on June 21, 2014, 12:20:49 PM yep its got the 7.5kh 10"
i have a wot 15" and a sef 12" x 10 and a sef 15 x 12 not sure which to put on it do you know which should work best ? your help is very much appreciated david Title: Re: Size isn't everything Post by: Chef Geoff on June 21, 2014, 12:35:36 PM "put on it"? on what? the Xterra? They won't fit the Xterra
Title: Re: Size isn't everything Post by: dances with badgers on June 21, 2014, 12:40:23 PM weldone dad ;)
Title: Re: Size isn't everything Post by: david995 on June 21, 2014, 12:45:17 PM yes your right of course , can you reccomend a 15" coil for it that should cope with the ground ?
Title: Re: Size isn't everything Post by: Chef Geoff on June 21, 2014, 12:47:34 PM There is only one 15" coil made that will fit and that's a WOT coil ;)
Title: Re: Size isn't everything Post by: david995 on June 21, 2014, 12:52:30 PM yep i have a 15" wot on the explorer se , so im assuming they have another 15" wot , one with a different connection for the x terra ?
excuse my thickness just started david Title: Re: Size isn't everything Post by: david995 on June 21, 2014, 01:38:20 PM Hi geoff
looking at the wot coils they have 3 frequancys 3 7.5 and 18.75 khz which would you go for ? the 7.5khz worked fine on the stock coil , size 10" Title: Re: Size isn't everything Post by: Chef Geoff on June 21, 2014, 03:35:05 PM I would probably go for the 18.75 on xterra not as deep as the 7.5 but more sensitive to small items and better around high mineralised ground ;)
Title: Re: Size isn't everything Post by: david995 on June 21, 2014, 05:02:24 PM Thanks very much geoff i will look around see whats available
david Title: Re: Size isn't everything Post by: musket ball on June 22, 2014, 07:05:07 PM well done chef on your coins.i went out today in this heat but hell it was dry under foot.signals were awfull.should b better after some rain i hope
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