fisher 2 box question

[taliesin]

i bought an old fisher fw-5 .it didn't come with the handle .does anyone know the dimensions ? and is there a tuning screw on the handle like the newer models ?
thanks in advance

[mikebg]

i bought an old fisher fw-5 .it didn't come with the handle .does anyone know the dimensions ? and is there a tuning screw on the handle like the newer models ?
thanks in advance

All old models Gemini and TW have tuning screw.
http://www.fisherlab.com/industrial/...le-locator.htm
Length on handle is 49 1/2 inches.
You can use manual for Gemini III
http://www.fisherlab.com/hobby/manua...ual-reader.pdf

Fisher Labs TW-5 on-handle demo for locating underground pipes and cables
http://www.youtube.com/watch?v=UqWYR8DwxP0

[taliesin]

All old models Gemini and TW have tuning screw.
http://www.fisherlab.com/industrial/...le-locator.htm
Length on handle is 49 1/2 inches.
You can use manual for Gemini III
http://www.fisherlab.com/hobby/manua...ual-reader.pdf

Fisher Labs TW-5 on-handle demo for locating underground pipes and cables
http://www.youtube.com/watch?v=UqWYR8DwxP0

thanks mike

[taliesin]

i forgot to ask mike

thanks mike

how does the tuning screw work .will any screw work?

[mikebg]

how does the tuning screw work .will any screw work?

The screw operates as knob for induction balance.

[taliesin]

thanks mike

is the black rim indicated plastic on the new ones ?

[mikebg]

is the black rim indicated plastic on the new ones ?

Taliesin, the rim operates as coil. In your model, the coil has only one turn, connected to circuit by a matching transformer.

[taliesin]

thanks mike

very good of you to help

[mikebg]

very good of you to help

and to search WEB instead you
Here is a circuit of RX box:

[Geo]

Hi Mikebg.
Fisher Gemini III has not one turn loop as the Gemini II. It has many turns.
I believe that TW is the same with Gemini III.

Regards

[mikebg]

Hi Mikebg.
Fisher Gemini III has not one turn loop as the Gemini II. It has many turns.
I believe that TW is the same with Gemini III.

Regards

Taliesin will tell us. If the rim of TW is made of aluminium, then the loop has only one turn.

Geo, Do you have circuit diagrams of Gemini III?

[taliesin]

Taliesin will tell us. If the rim of TW is made of aluminium, then the loop has only one turn.

Geo, Do you have circuit diagrams of Gemini III?

yes the rim is aluminium

[Geo]

Taliesin will tell us. If the rim of TW is made of aluminium, then the loop has only one turn.

Geo, Do you have circuit diagrams of Gemini III?

Sorry... but No.
I tried to reverse the pcb but i let it at half.... maybe i am a little lazy

Regards

[taliesin]

3 piece handle $145

i bought an old fisher fw-5 .it didn't come with the handle .does anyone know the dimensions ? and is there a tuning screw on the handle like the newer models ?
thanks in advance

what have the people over at fisher been smoking.i just got a quote out of interest before having a go at making my own.i wonder what price they buy them in at

[mikebg]

what have the people over at fisher been smoking.i just got a quote out of interest before having a go at making my own.i wonder what price they buy them in at

Taliesin, the original handle is not only too expensive. It's also too heavy. A wooden stem would be lighter and will do the same job even better because it will not generate a parasitic signal as a metal object.