PCS Electronics PCS Electronics - home page PCS Electronics  
RegisterSearchFAQAM & FM Radio transmitters shop UsergroupsLog in
TDA7000

 
Reply to topic    PCS-Electronics Forum Index » Schematics - help and ideas View previous topic
View next topic
TDA7000
Author Message
TEK
Guest





Post TDA7000 Reply with quote
Just been looking at the TDA 7000 RX. Anyone know the component values to change this to receive in the region of 50 - 60 mhz ? still in wideband mode.Any help would be good!!
Sat Mar 15, 2003 7:13 pm
Mike
New registered user
New registered user


Joined: 01 May 2003
Posts: 5
Location: Belfast Northern Ireland UK

Post Reply with quote
I think changing the value of L3 should enable you to tune out of band ?
Thu May 01, 2003 12:37 am View user's profile Send private message
Mike
New registered user
New registered user


Joined: 01 May 2003
Posts: 5
Location: Belfast Northern Ireland UK

Post Reply with quote
BTW does anyone know how TDA7000 circuits compare against portable radios for RF performance (Sensetivity/selectivity/overload) ?
Thu May 01, 2003 12:50 am View user's profile Send private message
djmadis
New registered user
New registered user


Joined: 10 Jun 2003
Posts: 1

Post Reply with quote
Anyone has a PCB for this circuit: http://www.pcs-electronics.com/schematics/Tda7000Rx.jpg ?
Tue Jun 10, 2003 5:42 pm View user's profile Send private message
thebigbossman1@hotmail.co
Guest





Post re-tda7000 Reply with quote
The tda7000 can be modified very easy to pick up any FM stations from 1.5 mhz to 200 mhz. It will tune in on wide band or narrow band. Experiment with both coils and change the value of a few capicitors.The philips data sheet will show you what to change.I found this ic very easy to modify and to make a receiver from.I have done alot of experiments with this ic,and I recommend it mainly for listening to the amatuer radio band (vioce) not music as it operates in mono not stereo.Dont forget to buy capacitors with a tolerance of 5%.This will greatly improve stability.No drifting off stations.I also recommend that you buy a kit for $40 aussie dollars and modify components.
Fri Jul 04, 2003 12:13 pm
pcs
Site master
Site master


Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
TDA7000 is s great little chip. But it has its limitations.

It was designed to be simple, but several compromises were
made.

While it is perfect for KIT builders and beginners, I would not
consider building a receiver out of it, if I wanted it to be a really
high quality receiver. It, for one, doesn't support stereo.

Still, great as a beginner project.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Jul 14, 2003 11:53 pm View user's profile Send private message Visit poster's website
5r5
Guest





Post Reply with quote
You could try with Tda 7021 and tda 7040 as stereo decoder with it.
Sun Sep 14, 2003 10:06 pm
Duke
Guest





Post Re: TDA7000 Reply with quote
TEK wrote:
Just been looking at the TDA 7000 RX. Anyone know the component values to change this to receive in the region of 50 - 60 mhz ? still in wideband mode.Any help would be good!!


Try reducing the inductance of coil.
- It should work.

BTW: TDA7000 is a great chip, but there are newer ones, I you TDA7000 as signal receiver from transmitter.
Mon Sep 29, 2003 11:13 am
pcs
Site master
Site master


Joined: 18 Jan 2002
Posts: 3063
Location: Radio Land

Post Reply with quote
You propably mean increase inductance?

Yes, try adding a few turns, that should do it.

_________________
Best regards,
Marko - PCS Electronics
--------------------------------------------------------
Turn your PC into a FM radio station!
http://www.pcs-electronics.com
fax +386 4 2316 128
Mon Sep 29, 2003 11:29 am View user's profile Send private message Visit poster's website
Display posts from previous:    
Reply to topic    PCS-Electronics Forum Index » Schematics - help and ideas All times are GMT + 1 Hour
Page 1 of 1

 
Jump to: 
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group