Since a normal half-wave dipole is approximately 70 ohms, or so, a standard 1:1 balun should do fine. Make sure it's a current balun (MFJ, Radio Works sells them).
Since a normal half-wave dipole is approximately 70 ohms, or so, a standard 1:1 balun should do fine. Make sure it's a current balun (MFJ, Radio Works sells them).
Since a normal half-wave dipole is approximately 70 ohms, or so, a standard 1:1 balun should do fine. Make sure it's a current balun (MFJ, Radio Works sells them).
Nope, that MFJ-915 is a line isolator, and won't do the job. Same for those coax chokes. Those are simple common mode chokes and are not baluns. I recommend the MFJ-918 for your dipole application.Thanks. I have a MFJ-915 that I can install inline. MFJ says that I can use that or wire a air core rf choke. I'll have to find out what diameter and how many turns. I'm using 8x coax with a .77 vf.
Nope, that MFJ-915 is a line isolator, and won't do the job. Same for those coax chokes. Those are simple common mode chokes and are not baluns. I recommend the MFJ-918 for your dipole application.
Hmmm.... OK. You really don't need a balun, unless you're anal retentive about balance and perfect patterns. With that gizmo, I wouldn't worry about a balun. Yup, run that MFJ-915 in line, and it should be OK.
Looks like they have them
Univercom CRE 8900 Compact Mobile Amateur Radio
Incoming Region Produces X3 Solar Flare |
May 15, 2024 @ 14:55 UTC |
Another major solar flare, but this time from an active region just beginning to turn into view off the east limb. It is possible that the group responsible is old AR 3654 from the previous rotation. The latest flare, an X2.99 event just peaked at 14:38 UTC (May 15). Stay tuned |