AV multiband VLF receiver
 

Dear LRL enthusiast,

here you are an Audio-Visual Multiband VLF receiver as new toy for New Year.

You get visual signal over 4 different coloured LED's and audio signal generated by help of an melody generator circuit IC UM66 (UTC), CMOS IC’s designed for using in phone etc.

Main antenna is ferrite antenna, inductance of 57mH, but you can ad telescopic antenna too, if you wish. There are 5 frequency band, realised by switching between different capacitors, which represent different tank circuits in connection with ferrite antenna, as member Sneshko proposed:

Band Selector:
ELF (3Hz-30Hz);
SLF (30Hz-300Hz);
ULF (300Hz-3KHz);
VLF (3KHz-30KHz);
LF (30KHz-300KHz).

For C5 you can use variable capacitor out of an old radio for better frequency tuning and band covering.

Part list (Zehner diodes: 2x3V3, 1x4V7, 1x6V1, 1x6V ) :

Not on part list: 1pole 6-position rotary switch (as on pic or similar) and power ON/OFF slide or toggle switch.

For transistor Q1 and Q2 better use hi-gain type like BC549C instead BC549B.

UM66T melody generator:

happy years.
vooovvvv design a very fantastic idea.:razz:
http://images.beyazgazete.com/haber/...i-adliyede.jpg

Thanks
Regards

Amazing circuit WM6.
You should really put an attenuator somewhere...

Happy new year !

Happy new year !
now all the gold melted.:razz::D

Yes, be careful with your golden teeth.

Happy new year to all world.

Happy new Year WM6!
It seems you are the real Santa Claus. :)

I wish to be Senta Berger in his early days. more than Santa Claus (look at pics below why).

Happy new year with a lot of gold findings to you.

http://members.tripod.com/%7ECARIART/Senta_Berger.jpghttps://encrypted-tbn2.google.com/im...cnVGcH3O8PN4g5

Which one is the picture of yourself?

Have you noticed there is a common element in the two pictures?
.
.
.
.
.
They're both wearing false hair ..... and not many clothes, of course. ;)

Errr....
I think one is wearing a hat.... http://www.longrangelocators.com/for...1&d=1323729073


Best wishes,
J_P

I don't know If I can see that far but the one whith the hat looks raped.:lol::lol::lol:

Did you not notice the false beard?

HELLO.
YOU DREW SOME CONCLUSION ON THIS MANUFACTURE, IT CAN IT HELPS IN THE RESEARCH OF TREASURE?
A SIMPLE GAME?
I THANK I WAIT FOR YOUR ANSWER.

No game, this is real receiver.

It is way better than mineoro, rangertell and other expensive crap too.

I THANK FOR YOUR ANSWER,
THEN I BELIEVE THAT IT DESERVES THE LABOR I MANUFACTURE HIM.

2 QUESTION.
It can detection gold general metals (treasure) from distance?

2) IT WOULD HELP IF WE ADD IN THIS MANUFACTURE A TRANSMITTER OF LOW FREQUENCIES?????

And what is right UM66 ?


You're really Santa Claus. HAHAHAHAHAHAHA


UM66


- Auswahl aus folgender Reihe:
UM66T-01L - (5x vorhanden) - Jingle Bells + Santa Claus is Coming To Town + We Wish You a Merry
UM66T-01S - (5x vorhanden) - Jingle Bells + Santa Claus is Coming To Town + We Wish You a Merry
UM66T-02S - (5x vorhanden) - Jingle Bells
UM66T-04S - (5x vorhanden) - Jingle Bells + Rudolph, the Rednosed Reindeer + Joy to the World
UM66T-05S - (5x vorhanden) - Home Sweet Home
UM66T-06S - (5x vorhanden) - Let Me Call You Sweetheart
UM66T-08S - (5x vorhanden) - Happy Birthday to You
UM66T-09S - (4x vorhanden) - Wedding March (Mendelssohn)
UM66T-11S - (5x vorhanden) - Love Me Tender, Love Me True
UM66T-19L - (5x vorhanden) - For Elise
UM66T-19S - (5x vorhanden) - For Elise
UM66T-32L - (5x vorhanden) - Waltz
UM66T-32S - (5x vorhanden) - Waltz
UM66T-33S - (5x vorhanden) - Mary Had a Little Lamb
UM66T-34L - (5x vorhanden) - The Train is Running Fast
UM66T-34S - (5x vorhanden) - The Train is Running Fast
UM66T-68L - (5x vorhanden) - Its a Small world
UM66T-68S - (5x vorhanden) - Its a Small world
- Alle Bausteine TO92 - Gehäuse
- Hersteller: UMC
- Betriebsspannung: 1,3V - 3,3V
- Stromaufnahme: 1,5mA
- CMOS - LSI - IC
- Alle notwendigen Tonerzeugungsbaugruppen sind integriert
- Power on reset, Melodie beginnt mit erstem Ton
- Piezo-Summer kann direkt angeschlossen werden
- dyn. Lautsprecher wird über zusätzlichen Transistor bzw. NF-Verstärker angeschlossen

2. Very very big gold deposit, maybe.

3. Yes transmitter can be very useful. I posted TX schematic in another topic.



For start UM66T-68L or UM66T-68S should be ok, but I prefer For Elise..

3. Yes transmitter can be very useful. I posted TX schematic in another topic.

THEY IS THE MANUFACTURE WITH THE TBA820M?

(UM66T19L) THEY IS BETTER?

Transmitter is based on NE555. You need very weak transmitter.

http://www.longrangelocators.com/for...lf+transmitter

Which UM66 you use is of personal preference, in electronic mean all are the same.

IN WHO POINT OF BOX, THEY IS SUITABLE, FOR THE PLACEMENT OF AERIAL (ΑΝΤΕΝΝΑ) OF TRANSMITTER?
FOR CAPACITOR 200UF I USE ELECTROLYTE BIPOLAR?

Antenna can be part of the bottom of the box.

Which 200uF electrolyte, there is not such C in transmitter schematic?
If you ask for receiver, yes, it can be bipolar as unipolar too (in this case + pole should be on switch side).

C1. EXIST DOESN'T 200UF CERAMIC CAPACITOR, OR DOES EXIST?