On 11/27/2014 11:03 AM, Didier Juges wrote:
Another reason is reproducibility. If you or someone else wants
to reproduce your design, using a well defined and available commercial part makes it much easier to achieve the same performance, particularly for RF components.
Didier KO4BB
Exactly right. I wrote an article on receiving loops and showed a design with a 50:5 (turns ratio) transformer wound on a toroid. Again, this is not available from MiniCircuits. I have wasted time dealing with numerous dumb questions about "can I use XXX core that I have laying around the lab?" or can I use a different gauge wire to wind it, etc. So many people complained about the shipping cost to buy one core that I stocked the cores and included them with PC boards I was already selling to reduce the shipping cost to "zero". BTW, 73 material would NOT work in this application. I was asked about that multiple times even though the article specifically said it would not work and explained why. Rick Karlquist N6RK _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
