Technically,the best on Deep silver should be a detector with AN ADJUSTABLE GROUND BALANCE,and
a LOWER KHZ. operating frequency..The older Bandito Umax, has both a MANUAL GROUND BALANCE AND A LOWER FREQUENCY of 10khz...
Similar to the Bandito,The Silver Umax also has a lower frequency 10kz.,(but no ADJUSTABLE GROUND BALANCE)..However,from what others say,the Silver Umax combined with the larger 10x12 coil goes deep on old silver!
The older Sidewinder has a little higher frequency of 12khz,(therefore a little less sensitive on deep silver), than the
lower 10khz. Bandito and Silver Umax..
Then there are the three newest Tesoro detectors: Cibola,Vaquero,and Tejon..ALL are in the
14 khz range..These higher khz. models are hotter on gold than deep silver..
Of the 3 newer units, the Tejon and Vaquero with ADJUSTABLE GROUND BALANCE are the deepest,then the Cibola,(NO ADJUSTABLE GROUND BALANCE)..Maybe for this reason some Cibola users report finding Iron,because of its lower conductivity???
ALSO, these newer models:Tejon, Vaquero,and Cibola have Tesoro's newer HOT circuit technology,for added depth/sensitivity! The increased sensitivity,combined with the higher 14 khz. frequencies,are REALLY HOT on gold!
BUT I myself prefer the older Bandito Umax,Sidewinder and Silver Umax **MODUALTED 600HZ. AUDIO** over the newer 400 hz. steady tone audio of the Vaquero,Cibola,and Tejon,(these newer units make it it harder to discern a pulltab from a coin..)
BUT AGAIN,if its depth your looking for, the Cibola ,Vaquero,and Tejon ALL have the older models beat,because of
sheer SENSITIVITY/DEPTH,with the new HOT circuit technology!!
****THERFORE,When will Tesoro combine the new HOT circuitry of the newer machines,with a LOWER TRANSMITTING FREQUENCY AND HIGHER KHZ AUDIO,( of at least 600 hz!),of the older machines???***
Speaking of the modulated audio of the older Silver Umax, (and Silver Sabre Umax),why was **TRUE ALL METAL PINPOINT** mode,(red button on older Silver Sabre Umax), dropped from the newer Silver Umax line???!!
When Tesoro came out with the newest Silver Umax, I was so happy,I thought the **ALL METAL PINPOINT**,
( red button pinpoint button from the older Silver Sabre Umax), was being replaced by a TRUE **ALL METAL PINPOINT MODE** STEEL TOGGLE SWITCH on the new Silver Umax! BUT NOT SO!!! The newer Silver Umax ALL METAL
MODE simply lowers the amount of discrimination while hunting!
********Therefore, I feel a new Tesoro model is needed,one with the HOT circuitry of the newer machines,but combined with a LOWER TRANSMITTING FREQUENCY AND HIGHER KHZ. *MODULATED AUDIO*,( of at least 600 hz!),
of the older machines.Plus my new proposed model should have a new **ALL METAL PINPOINT** STEEL TOGGLE SWITCH, (with TRUE **ALL METAL PINPOINT***), simular in operation of the older **SILVER SABRE UMAX*** red plastic button!! This **ALL METAL PINPOINT** STEEL TOGGLE SWITCH would keep the detector in **ALL METAL PINPOINT** mode,so a user would not have to keep their thumb down on a red button,while pinpointing/discerning the target!!!
For a little more money, this same model could also have a LIGHTNING FAST ***ANALOG METER***,with LARGE EASY TO READ DISPLAY reading: Iron ,Tab,Nickle, Dime,Quarter,Half.. AND EVEN BETTER YET the meter would have a back light for night hunting!!
I've written Tesoro abouth this twice,but no response....Oh Well! Lol!
Dave F. from Pa.