Jo Tech Service   Joar Falstad


 INDEX




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Hardware news.   
Audio filter
Idea & solution by Joar Falstad.

Live audio noise reduction hardware, using a  
strong pass audio filter, with adjustable setting of minimum pass level.

Read more   /   some video examples :
Real time voice audio background  noise and hiss cleaner ,


Live /  real time  audio voice sound background / ambient noise & hiss reduction / removal  /  cleaner /  filter  /  limiter , 
Unlike a noise gate this system will reduse background noise all the time , also inside a message .

Measured  audio
reduction outside pass level:   up to  100 x  or   20db
Adjustable
audio reduction outside pass level to come.
 
Strong pass audio filter test  :

Demo video , youtube






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Hardware PLC
analog multiplexer
Idea & design by Joar Falstad


Industrial Analog Multiplexer
Detailled schematic examples
0 - 10V  /  4 - 20mA




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Windows Programs 
Idea & design by Joar Falstad



Advanced Public Address System




PC controlled. 
Detailled schematic examples.
ISA demo version download
First ver : ISA  Win95.  
Latest ver :  usb Win7

Advantec USB 48ch DIO interface
and a digital input / output board, also from Advantech

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Windows Programs 
Idea & design by Joar Falstad

AD/DA Conversion and Data Acquisition made easy.



Time and Masterfile controlled AD-DA conversion ,
Easy setup. Easy to run and control.
The Masterfile
is generated by the program itself , as a linear "Unit Value" function from a Time ref to the next "Unit Value" at the next Time ref.
There is no limit in number of Time ref's  from tne project start time to the final stop time.
PC clock is used to control the Time

First ver : ISA , Win95 .  Early demo version download
Next ver : PCI , Win98 . Plug & Play.
We are now working on a USB ver in Win7




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Abouth


Old news /  history 

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Windows Programs 
 

DMX  stage lights control    . 
How to connect  & more 


Link to:  
Enttec  compatible  DMX    open source VB6  program download .  1ch. to 512 ch.
 Win 7 + VB6 runtime files + VB6 installed on your computer

Download:   Easy to use, universal DMX program
download1ch. to 512 ch.
Win 7  + downloadable VB6 runtime files .
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Service
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Sony update / service
TA-5650 , drifting bias fix.

Vingtor, Stentofon
Old / obsolete intercom systems.  Replacements. Repairs

Compact 32-2  /  VMP32-2
Old / obsolete intercom systems.  Replacements. Repairs
This system is still used on ships.

Zenitel, AlphaCom,  ACM 
Later systems, often used on ships.  
Manufactured today . 
Also compatible with older wireing and stations.

Monacor Catalog  
We are one of several Monacor suppliers in Norway.

100Volt line. Pa speakers & amplifiers .
Stage audio and light equipment
Alarm systems , also w/ backup, ip adressing, wireless and more.
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Domain:       Jotech.no     ( registered on 20-03-2001
)

contact:       Joar Falstad

phone:          +47  99718408

Mail:            mail@jotech.no

url:                http://www.jotech.no

Company:     Jo Tech Service  Joar Falstad, Lykkmarka 53, 7081 Sjetnmarka, NORWAY



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A big  company has now taken the  same domain name  . " jotech "
To protect our site  and  keep it seen on the internet , we'll  continue to add nice pictures , mostly from Norway.



 Norway , Trondheim


Morning view .
Norway, Lyngen alps  , Havnnes , Rotsund , Nordreisa



Norway, Ekne Falstadberget
Nostalgy from the 70's.  With Vital 15 feet




South Africa .  Cape Town


South Africa .  Cape Town

South Africa .  Cape Town

South Africa .  Cape Town

South Africa .  Cape Town

Norway , Malvik, the ghost tree