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1 vote
0 answers
44 views

How do I test if three turns are better than 4 turns?

1 vote
1 answer
74 views

What is a diode for in a JFET-based audio mute circuit?

2 votes
1 answer
156 views

MW AM reception improvements?

13 votes
5 answers
4k views

How can I add amplitude modulation to this transmitter?

7 votes
4 answers
1k views

LoRa radio transceiver for PtP mesh?

5 votes
2 answers
88 views

14dB insertion loss for bandpass filter acceptable?

1 vote
1 answer
208 views

How do I wire an external mic and speaker to the Yaesu FT-250R without using their adapter?

10 votes
2 answers
881 views

Why do we have to hand wind toroids?

3 votes
3 answers
691 views

Effect of paint / uv coating on velocity factor of PVC

6 votes
0 answers
224 views

How to estimate input and output impedance of an amplifier?

3 votes
1 answer
144 views

Looking for criticisms on my VNA-like SWR meter I am designing

6 votes
1 answer
183 views

Simple circuit for acceptably clean CW in homebrew TX?

3 votes
4 answers
167 views

How do homebuilders find an audience to distribute kits to?

5 votes
0 answers
458 views

What is an expected IF level of SA612?

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