Hi
i wanted to ask if i use 1uh coil and 10-20 pf capacitor in legs 5,6,
whould i receive the 35-50 mhz band?
in leg 13 there is only 180pf capacitor and antenna,no coil.
thank you.
What are you trying to receive?, as far as I'm aware the TDA7000 is a WBFM (Wide Band FM) receiver chip - and I don't think there are any WBFM signals in that frequency range.
Right! - not 'mobile' phones, but 'cordless' phones, ones which use a normal land line.
All the recent ones of those I've seen have been digital as well, but the older ones (in the UK) used a low frequency (top end of MW band) link from base station to handset, with a shortwave link back from handset to base station - certainly 40-49MHz sounds the right sort of frequency.
Assuming the links are FM, they will be narrow band (the frequency used suggests that, and the bandwidth confirms it). The TDA7000 is designed as a wideband broadcast receiver, I can't say I've studied the TDA7000 much, but the usual way of doing narrow band is to use a lower IF frequency, 455KHz instead of 10.7MHz. Most often this is done using a dual-conversion technique.
yes you right,cordless' phones,sorry.
i know there is a way making the tda7000 receive narrow band: **broken link removed**
do you know more simple way?
yes you right,cordless' phones,sorry.
i know there is a way making the tda7000 receive narrow band: **broken link removed**
do you know more simple way?