DIY datas for small lorenz deepmax x5 coil needed

[bernte_one]

hello

yesterday a detectorist from my region visited me and asked me for a small DIY coil for lorenz deepmax x5

he had a bigger coils with, i think, the 35cm version

it is a kind of dd shaped coil for pi units with separeted connection cables

was very hard to measure because the pins are deep in the connector plug

but i was able to measure sure one line with 1,14mH

i suppose that the two side has same mH, shield, but i think they dont overlap like vlf dd coil because of coil form it has a big straight part in the middle

means they are fitted side by side or with little distance 1-2cm

thats not sure but i think so

has anyone soem experience with this machine or s able to measure the coils over the plug

to give me the specs

the task is to build a small (20cm) dd coil for better separation with working ground balance

the is no commercial thought behind but i think its an interesting task to solve

regards

[bernte_one]

coil connector has following plug

i will try to measure again a second when time makes it possible

but would be kind if someone who has this machine in use could measure too

kind regards

[bernte_one]

hello some news

the coil is an overlapping DD configuration like the one we know from the vlf projects

so i think it is a type of pulse iduction balanced coil

the riddle is now how to setup this one

for example on igsl coil we tune the coil so that the rx part gives a the smallest induced voltage
we do that by sending a waveform signal from tx to rx

at a pi coil is no continuing waveform there are short pulses so how could i measure whether the hole unit is tuned the right way

idea from me is to link an othr pi (example baracuda) at original coil to tx and se what comes out t the tx part?

regards

[Qiaozhi]

hello some news

the coil is an overlapping DD configuration like the one we know from the vlf projects

so i think it is a type of pulse iduction balanced coil

the riddle is now how to setup this one

for example on igsl coil we tune the coil so that the rx part gives a the smallest induced voltage
we do that by sending a waveform signal from tx to rx

at a pi coil is no continuing waveform there are short pulses so how could i measure whether the hole unit is tuned the right way

idea from me is to link an othr pi (example baracuda) at original coil to tx and se what comes out t the tx part?

regards

The balancing for an induction balanced coil on a PI is not critical. One of the reasons for using an PI-IB coil is to allow the RX coil to have more turns (higher inductance value) to increase sensitivity. The IB arrangement also provides better pinpointing than a mono.

[bernte_one]

tx 0,34mH 2R2
rx 1,14mH 9R

one parallel resistor inside coil on one side 211R or 2,01k cant measure because it was parallel to coil could only read the lines
regards

[bernte_one]

got it!

details later