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Re: Subject: [Discuss-gnuradio] APCO 25

From: Ian Wraith
Subject: Re: Subject: [Discuss-gnuradio] APCO 25
Date: Wed, 22 Jan 2003 23:08:39 +0000


>Anyway all being well early tomorrow morning I shall try and connect
>the circuits I have together and mount them on something so they are
>usable for experimentation.

 I managed to do this and had a play with the experimental circuit
tonight. I will need to build an IF amp as I suspected but when I tuned
the AOR3000 to a very very strong signal then I could see a 20mv p to p
signal on the I & Q out lines of the RF2711. When I tuned to a strong
1200 baud data signal I could see some some nice sine waves on my o'scope
when looking at the I & Q lines so at least I know the circuit is working.

 Now its time to order up some parts and design the IF amp and I & Q
filtering and amplification circuit.



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