It is an antenna easy to build, does not require adjustments, if you read carefully the documentation. What can I add to ON6WG work are the AA230 tests. I used RG58, because is very hard to insert H1000 or other low loss cables into 50 mm pvc pipe. You can find on page 3 all the formulas you need to calculate all the dimensions. The most important job was the feeding harness. But at a vertical angle of 40°, there is a 2 dB difference in favour of the Eggbeater antenna. straight over the antennas (90°), there is a 2 dB difference in favour of the Turnstile antenna. The ground reflector was made with 8mm aluminium rods, 4 pcs x 53 cm lenght, conected in center and mounted at 27 cm under loops. angles (55 to 90°) while the Eggbeater antenna favours intermediate vertical angles ( 30 to 55°). For mounting, I used 50 mm pvc water pipes and textolit. The circumference of the loops is 212 cm. I was inspired from documentation writen by ON6WG/F5VIF (you can download from his website, ).įor building the loops I used flat aluminium (15 x 2 mm), you can find in bricolaje store at 2.6 meters lenght. So, I modified the old antenna for new frequency, this time using a Rig Expert AA230 for final testing. My first adventure with the eggbeater antenna took place 1 year ago when I made this antenna for 137Mhz weather satellites.įew months ago I tried to listen the satellites trasmitting on 2 m band.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |