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 Post subject: WTB 3 IC chips for transmitter kit
PostPosted: Dec Thu 07, 2017 12:21 am 
Member

Joined: Apr Thu 12, 2007 3:24 am
Posts: 1112
Location: Milwaukee,WI
Earlier this year I bought a pair of PCBs for the $12 MW Synthesized Oscillator project that has been discussed in these forums. I had forgotten that I sold off my collection of digital ICs to a member here. So I am in need of two each of a CD4060, MC14046, MC140103. If you only have one of each to sell I'll take that. I know they are available online but I thought I would ask here first in case someone bought too many and have some to sell. I can pay by Paypal. If you have any of these ICs, post here and send a PM. Thanks.


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 Post subject: Re: WTB 3 IC chips for transmitter kit
PostPosted: Dec Sat 09, 2017 3:32 am 
Member

Joined: Apr Thu 12, 2007 3:24 am
Posts: 1112
Location: Milwaukee,WI
I found a pair of 4046 chips while going through my stash. So I still need the other 2 numbers.


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 Post subject: Re: WTB 3 IC chips for transmitter kit
PostPosted: Dec Sat 09, 2017 6:03 pm 
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Joined: May Tue 05, 2009 10:21 pm
Posts: 253
Location: West Windsor, NJ 08540
I may have a thru hole CD4046 DIP type but it may take a while to locate it.

Just curious, what is the frequecy coverage of your synthesizer is ?


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 Post subject: Re: WTB 3 IC chips for transmitter kit
PostPosted: Dec Sat 09, 2017 11:24 pm 
Member

Joined: Apr Thu 12, 2007 3:24 am
Posts: 1112
Location: Milwaukee,WI
In the post above your's I mentioned I found a pair of 4046 chips already.

I forgot the exact range the article mentioned using a 10.240MHZ crystal. But it does cover the whole AM broadcast band. If I remember correctly if you want the range up higher than 3 or 4 MHZ you would need to use the 74HC version of the 4046.

http://www.tompolk.com/radios/frequency ... synth.html


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 Post subject: Re: WTB 3 IC chips for transmitter kit
PostPosted: Dec Sun 10, 2017 1:48 am 
Member

Joined: May Tue 05, 2009 10:21 pm
Posts: 253
Location: West Windsor, NJ 08540
I checked out the article about the AM Band Frequency Synthesizer It was a very interesting synthesizer design.

Thanks for the link and good luck with your project.


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