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I need some major / high level DSP experts onboard and have come here to ask that anyone with a lot of DSP experience in the area of the RF Spectrum that covers 25MHZ through 1.3GHz.
Here are my requirements for phase 1:
Phase 1
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1) Gather at least this group makeup:
a) RF design...
I also plan to add at least one each of the following:
IC's
7490
7448
556
7555
4013
4066
4017
4011
74LS90
74LS48
7404
7400
Diodes
1N914
1N4001
Transistors
2N2222
2N3904
2N2907
2N3819
2N4841
2N3906
Volt. Reg's
7805
7812
7815
Also a 741, 317, 339 and 386
Cool! I also forgot to say that I found a Motorla MC6800P CPU chip in my collection too.
Well, yes, I know it would be illegal without a license. Don't wanna get into anything that isn't leglal, though I wanted to try some LPAM or LPFM some day.
It would be nice if I could have a filter for...
To the 2nd poster (1st reply), here is the text contained in the file. Sorry if it's a bit lengthy. Well one of the things I've always wanted to have is a loop antenna pre-amplifier. Oh yeah, I was told once to collect all the data sheets on the components which I did and saved on a Zip 250...
irf630 am transmitter
Hello all!
I'm back again with a question about what to build with the few components I have, or at least be able to start with the ones that I have.
I want to build something for my hobby but not sure what. I am active in DXing shortwave and amateur radio, and also...
Thanks for the replies. I'm understanding more of this as we go along. I have a complete set of data sheets on the components of the original design. Hoping this will get me started.
Next question? PL-259 or SO-239 output? or BNC male or female.
Gotta have a connector to an antenna...
I am designing and building an amateur radio transceiver that works in the 5 Amateur radio bands from 1,800 KHz to 30MHz.
It is based on a 10-12 year old design that uses a 3 chip computer using the 80C31 and a 27C64. The EPROM is supposed to have 2,008 lines of assembly code.
I am...
I've read that some people use the PIC 16F type micros in RF desgin such at this one.
Seems like you're right IanP. I'm going to look into that one too.
Edit:
Whilest the project is underway, I thought I would add that at the very best I would like to design reverse engineer and also...
thanks for your input IanP.
The 80C31 is a 40 pin processor. I believe all of the except Pin 10 through 18 are used. I have a copy of the PCB etching pattern and the schematics as well as the parts list for the controller board. Suggested was the AT89C2051 and AT89C52.
I looked at the spec...
pins 80c31
I am designing and building a radio transmitter that works in the bands from 1,800 KHz to 30MHz.
It is based on a 10 year old design that uses a 3 chip computer using the 80C31 and a 27C64. The EPROM is supposed to have 2,008 lines of assembly code.
I am redesigning the circut...
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