MINI-BALUN 1:1 Coax Interface to Ladder Line, Dipole elements, 500 Watts PEP, up to -38Db Common Mode Rejection, 1-61 MHz, Flagpole, Dipole, Beam and G5RV/ZS6BKW Antennas
Product Details
Brand: Palomar Engineers
MPN: MC-1-500SS
Country/Region of Manufacture: United States
Effective Frequency Range (MHz): 1.8-60
PEP Power Rating (watts): 500 SSB (25% duty cycle), 250 Watts CW/FT8 (50% duty cycle)
Common Mode Attenuation (db): 20-38db
Estimated Insertion Loss (db): .25 db
Input Connector Type: SO-239 female
Output Connector Connector Type: Dual 1/4" stainless steel studs
Ground Connector (Y/N): none
Enclosure Size (LxWxH inches): 3" long, 2 in wide, 1.25" high
MB-1-500-50 — 1:1 Balun & Coax Noise Filter (Balanced Interface)
1–61 MHz 500 W PEP Coax → balanced line
What it does
Interfaces coax to balanced antennas (e.g., open-wire OCF/G5RV) while providing strong common-mode rejection to keep RF off the outside of the feed.
Placement
At the transition to ladder line/balanced feed. Keep the first few feet of coax away from the antenna to avoid coupling.
| Range | 1–61 MHz |
|---|---|
| Power | 500 W PEP |
| I/O | SO-239 in • balanced terminals out |
Bundle: MB-1-500-50 + CMNF-500-50 at radio for belt-and-suspenders isolation.
This choke has a SO-239 input and 1/4" top studs output.
For Higher Power needs use our MAXI-CHOKER with dual stud outputs in 1.5KW or 3KW version part# MC-1-1500LL, MC-1-3000LL
If you need a unbalanced output (SO239 output) instead of a balanced stud output, see MC-1-500-50 with SO239 output and input..
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MAXI-CHOKER Coax Line Isolator/Balun, 1-61 MHz, 1.5/3KW, SO-239 In/Stud Output, FLAGPOLE OCF, G5RV, ZS6BKW, Hygain BN86/4000 Replacement, Ladder Line-Coax interface
MAXI-CHOKER Coax Line Isolator/Balun, 1-61 MHz, 1.5/3KW, SO-239 In/Stud Output, FLAGPOLE OCF, G5RV, ZS6BKW, Hygain BN86/4000 Replacement, Ladder Line-Coax interface
SKU MC-1-1500LL
$89.95