[minima] Re: A linear for the Minima
- From: Dan Reynolds <on30ng@xxxxxxxxx>
- To: minima@xxxxxxxxxxxxx
- Date: Wed, 26 Feb 2014 13:08:06 -0600
Never mind my questions. I figured out how the 4017 works. In mine I think
I will use a 74HC595. It uses three lines from the Arduino but can have
multiple output lines high and I was thinking of switching the "other"
LPF's with it as well.
Again, I'm learning a whole lot by following along in all these
discussions. A whole lot!! And I think that's a good thing. I really like
that you're bring the Arduino and the ham world together in this project.
73
Dan -- KB9JLO
https://sites.google.com/site/on30ng/
On Tue, Feb 25, 2014 at 10:59 AM, Dan Reynolds <on30ng@xxxxxxxxx> wrote:
> When will the radiono code have the bandswitching for this design in it?
> I'm not pushing just more curious about what the code will look like.
> Are you still using the original bandswitching code & hardware for the (2)
> receiver LPF's? Or were you planning to run them also off the CD4017 here?
> Thanks Farhan. I'm learning a lot by following along in this process. At
> some point though I think I need to build something! Hi, hi! :-)
>
>
> 73
> Dan -- KB9JLO
> https://sites.google.com/site/on30ng/
>
>
>> On 23/02/2014 6:34 AM, Ashhar Farhan wrote:
>>
>> I just finished a linear amp that is entirely RC-coupled except for the
>> power stage's output. I have built two of them and they appear to very
>> quite stable and clean. It uses just the 2N3904s in the chain except for
>> the power output stage.
>>
>> The details are here http://www.hfsignals.org/index.php/RF386
>>
>> It started with the a stupid question "Why can't the LM386 be used in
>> an RF linear?"
>>
>> I am particulary curious to know what value should one pick for the 100
>> ohms in the Q4. I am quite kicked by the one-line band-switching
>> arrangement.
>>
>> - farhan
>>
>>
>
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