LongRangeLocators Forums  

Go Back   LongRangeLocators Forums > Main Forums > Long Range Locators

Reply
 
Thread Tools Display Modes
  #51  
Old 01-13-2018, 05:05 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 355
Default

.
Attached Images
 
Reply With Quote
  #52  
Old 01-13-2018, 07:50 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,198
Default

It is good to connect a 10nF from pin5(555) to earth
__________________
Geo
Reply With Quote
  #53  
Old 01-13-2018, 08:04 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 355
Default

I'll do it, thanks, I have questions, is it better to add a radio to this device ?

and how to connect the radio to the beep generator ?
Reply With Quote
  #54  
Old 01-14-2018, 12:55 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,198
Default

Not for the time. First "play" with it so to see the problems and to find the solutions and later if you like you can add a radio.
You must connect it to beep generator (from volume potentiometer).
__________________
Geo
Reply With Quote
  #55  
Old 01-14-2018, 12:59 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 355
Default

I put nothing between the radio and the beep generator to amplify ?
Reply With Quote
  #56  
Old 01-15-2018, 07:53 AM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,198
Default

Quote:
Originally Posted by abdou2014 View Post
I put nothing between the radio and the beep generator to amplify ?
A capacitor 100...470n is neccessary
__________________
Geo
Reply With Quote
  #57  
Old 01-15-2018, 09:49 AM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 355
Default

ANDY WITH DIGITAL DISPLAY
Attached Images
 
Reply With Quote
  #58  
Old 01-15-2018, 08:52 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,198
Default

I attach a preamplifier suitable for this device.
If you will look carefully will see that it is the same amplifier (first 2 stages) of passive receiver from Alonso.
Also the same preamplifier uses the Cryfton OBND1?????????
__________________
Geo
Reply With Quote
  #59  
Old 01-15-2018, 09:33 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 355
Default

Is that right ?
Attached Images
 
Reply With Quote
  #60  
Old 01-15-2018, 10:46 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,198
Default

Quote:
Originally Posted by Geo View Post
I attach a preamplifier suitable for this device.
If you will look carefully will see that it is the same amplifier (first 2 stages) of passive receiver from Alonso.
Also the same preamplifier uses the Cryfton OBND1?????????
Sorry i forgot to attach
Attached Images
 
__________________
Geo
Reply With Quote
  #61  
Old 01-15-2018, 10:59 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 355
Default

There is no pot for gain ???
Reply With Quote
  #62  
Old 01-16-2018, 06:39 AM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,198
Default

There is one pot at preampl and one at main circuit.
It is better to put preampl and pot near to coil
__________________
Geo
Reply With Quote
  #63  
Old 01-16-2018, 09:47 AM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 355
Default

There is not all that in my schema, I think there is another version ???
Attached Images
 
Reply With Quote
  #64  
Old 01-16-2018, 11:40 AM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,198
Default

It is exactly the same (the first 2 transistors). Not so big difference if capasitors are 22n and not 10n.
Potentiometer must be 5k.
__________________
Geo
Reply With Quote
  #65  
Old 01-16-2018, 04:46 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 355
Default

Do you have any idea about this transformer, name, reference ?
Attached Images
 
Reply With Quote
  #66  
Old 01-16-2018, 08:41 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,198
Default

Where did you find it ??
__________________
Geo
Reply With Quote
  #67  
Old 01-16-2018, 08:53 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 355
Default

It's a joke
Reply With Quote
  #68  
Old 01-16-2018, 09:02 PM
abdou2014 abdou2014 is offline
Guru
 
Join Date: Mar 2014
Posts: 355
Default

Can this LRL detect a test field 1 year old ?
Reply With Quote
  #69  
Old 01-16-2018, 09:13 PM
Geo's Avatar
Geo Geo is offline
Guru
 
Join Date: Mar 2005
Location: Greece
Posts: 3,198
Default

Before years i wrote that the MFD by Andy Flind is the base of the schematic of Cryfton.
Before days i attached here the article of the MFD so the members who sent me so many emails to construct it. I saw it as a good opportunity to mod it a little (as to put a preampl) and to construct a lrl as the Crypton with so little money and to see if this lrl works and to save so many money. But i don't see interesting and maybe is better to stop here..
__________________
Geo
Reply With Quote
  #70  
Old 01-21-2018, 06:28 PM
Bill512 Bill512 is offline
Member
 
Join Date: May 2006
Location: Greece
Posts: 59
Default

long time ago...
Attached Images
  
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 05:37 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.