REFLECTOR EXPOSED TIP LENGTH
41 3/8” 40
3/8” 39
1/4” 38
3/16”
DRIVEN ELEMENT EXPOSED TIP LENGTH
GAMMA SIDE
38 1/2”
37 3/4”
36 1/4”
35”
DRIVEN ELEMENT EXPOSED TIP LENGTH
NON GAMMA SIDE
38 1/2”
39 1/4”
37 1/2”
36”
DIRECTOR # 1 EXPOSED TIP LENGTH
35 3/8”
34 1/2”
33 7/16”
32 7/16”
GAMMA TUBE TO GAMMA FEED BLOCK 1/8”
3/8”
3/8”
3/8”
GAMMA FEED BLOCK TO SHORTING BARS
7 5/8”
7 7/8”
7 7/8”
7 7/8”
DIMENSION DESCRIPTION
50.150 MHZ
51.00 MHZ
52.00 MHZ
53.00 MHZ
A
B
C
D
E
F
TUNING CHART
Congratulations on your purchase of the 6M-3SS, You have chosen a versatile 6M antenna, it can be
tuned for all modes of communication in the 6M band. This versatile antenna can break down into a small
package so you can use it for field days or DXpeditions, making this antenna a good choice. We have offered (4)
tuning choices, 50.150 MHZ used primarily on Horizontal polarity on SSB, 51.00 MHZ, 52.00 MHZ, and 53.00
MHZ used primarily on Vertical polarity on FM.
MOUNTING AND TUNING YOUR ANTENNA:
Normally M2 dose not condone mounting yagi antennas on vertical metal masts in front of the reflector in
the same plain as the elements. Mounting in this manor can cause VSWR changes, pattern changes, and gain
loss. It is a technical no no. Normally M2 would suggest a non metallic mast and routing your feed line off the rear
of your antenna. This may not be practical. So M2 has tuned the antenna on 51, 52 and 53 MHz on
TOP
of a
metal mast and with the feed line routed down the mast. Keep in mind we have mounted the mast on the
opposite side of the boom to allow the most amount of offset available so the mast and feed lines are not exactly
in the same plain as the elements. If you must run the metal mast up through and past the top of the element,
some further retuning may be required.
When mounting Vertically it is important to point the Gamma Match tube up with the vinyl cap in place.
This will give you your best results for wet and rainy conditions. You will also notice in the
TUNING CHART
that
the driven element tips may be set to different lengths, This helps compensate for the metal masts and feed line
in the same plain as the elements.
If you choose to mount on a non metallic mast and route your feed line off the rear of the antenna, or
mount your antenna vertically on a horizontal cross boom, balancing the driven elements tips may be required.
Use the “B” dimension for the “C” dimension as a starting point.
When mounting your antenna Horizontally you will probably be using it on SSB. So you would be setting
for 50.150 MHZ. Mounting your antenna with the element mount blocks on top of the boom and the Gamma
Match hanging below the boom, This allows the feed line to come off the boom cleanly.
Standard waterproofing techniques apply, although M2 suggests not to seal up both ends of the gamma
tube. If you get water in the tube it can cause VSWR changes and if you seal it at both ends, water will have a
more difficult time drying or getting back out. Keeping one end open, allows rapid drying.
M2 recommends Times LMR-400 type 50 Ohm coax or equivalent. If you are thinking of stacking two or
more 6M-3SS yagis’, contact the factory for phasing and matching information.
6M-3SS ASSEMBLY MANUAL
