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Re: BITX40 - frequency spectrum - Raduino irradiation - intermodulation products - #bitx40help


Jeffrey Peters
 

Thank you Dale,

This group is great and very helpful.

Anyone using the Bitx40 on CW and is the CW mod. on the BitHacks page all I need to do?
Just looking for a simple CW transceiver, guess I am not much of a phone op.

TU de Jeff K9JP

On Fri, Dec 15, 2017 at 3:10 PM, Dale Brooks KG7SSB <kg7ssb@...> wrote:
I had a nasty second harmonic which was greatly improved by adding this cap to the LPF circuit. It also improved the third and 5th order so much I don't even see them on the spectrum analyzer. They are at least -120 db down and below the noise level of the spectrum analyzer.?
Dale

On Fri, Dec 15, 2017 at 12:58 PM, Jeffrey Peters <dek9jp@...> wrote:
Thank you David - N8DAH,

I will read more about the LPF mod. and solder it on today!
I appreciate your help and kindness.

72, Jeff K9JP
Traverse City, MI

On Fri, Dec 15, 2017 at 2:11 PM, N8DAH <Dherron@...> wrote:
Jeff that cap mod for the LPF IS for the Bitx40.




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