Hi all, Antennas vs Aerials - I agree with Andy's comments. Commas and apostrophes are the least of our problems in the hobby. The abuse of the SI system of measurements in a real worry! Many people h

Hi Simon, You could always hunt out the VK3UM EME Calculator and play with some numbers. https://www.vk5dj.com/doug.html I am not aware of any reason why NF might be 2 X loss - the RF signal on receiv

Simon, Logically, the NF would be equal to the loss, plus any loss at each end due to connectors. Loss = 1.433 x 25/100 = 0.3583 dB for the 25 m length, plus any connector loss (say 0.1 dB as a guess)

Personally, I have had success using the DL6WU Yagi designs at 23 cm. Simply use the VK5DJ Yagi Calculator, available for download to install in a Windows PC. Carefully consider your material sizes, a

Neil, Have you tried requesting samples direct from Rogers? The samples are usually free, so it worth the effort of completing the on-line form: http://www.rogerscorp.com/request/index.aspx Down the p