C-49XR

C-49XR

The most powerful triple-monobander of all time!

49' boom, 24 elements

Shown here at Charlie's (W0YG) place in Colorado, this is the ultimate for 20-15-10 meters. It is properly called a triple-monobander, because it has three (3) large monobander Yagis overlaid on one boom. The C-49XR is the "Big Daddy" to the 31' C-31XR that has become the gold standard for winning contesters and DXers. The C-49XR can be used with separate feed lines for SO2R.

The XR series spans all of your needs for optimum performance on 20-15-10 meters, beginning with the C-19XR (19' boom), the C-31XR (31' boom) and the C-49XR (49' boom).

The C-49XR provides you on a single boom what a large stack of three, individual Yagis could do. This chart compares separate Force 12, Inc. monobanders to the C-49XR, with notes on the loss in gain when the individual Yagis are stacked on the same mast at 8' spacing:

Antenna	Boom Length	Windload	Weight	Forward Gain Alone, Compared to Full Size Dipole	Net Gain in Stack @ Vertical Spacing Between Antennas
Magnum 620, 6el 20	44'	8.3 sqft	72#	7.8 dBd	7.8 dBd (at bottom of stack)
Magnum 615, 6el 15	36'	4.5 sqft	45#	8.5 dBd	7.7 dBd @ 8' above 6el 20; loses 0.8dB. Loss is 0.9 @ 7' and more with closer spacing. Pattern is also not as clean as alone.
Magnum 810, 8el 10	30'	4.3 sqft	41#	8.8 dBd	8.0 dBd @ 8' above 6el 15; loses 0.8dB. Loss is 1.0 @ 7' and more with closer spacing. Pattern is also not as clean as alone.
C-49XR	49'	17 sqft (separate Yagis total 20.8 sqft)	180# (separate Yagis total 158 #)	7.8 dBd on 20 mtrs 8.2 dBd on 15 mtrs 9.5 dBd on 10 mtrs

Elements are all full size (no traps, no phased or driven cells).
Electrical design validated by independent consultant on NEC-4.
20 meters has 4 elements occupying 45' of the boom
15 meters has 6 elements using 44' of the boom
10 meters has 14 elements using 40' of the boom, with some of the elements utilizing new design techniques to sleeve energy through elements that are otherwise "unfriendly."
Single feedline, or separates - your choice - using the special feed system developed by Force 12, Inc. (as on the C-31XR).
Mechanical design using Yagi Stress (as all Force 12 antennas since day #1)
Rated at 100 mph standard, with 120 mph optional with no increase in windload.

Stack of C-49XR's

at Bob's QTH, W6RJ

Available now.

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