Alan,
Maybe I'm not a good describerizer. The hex sits on top of whatever
mast you provide. The center post I mentioned is about 3 feet tall and
is an integral part of the antenna, containing the coax connector, as
well as all the attachment points for the element wires and the kevlar
cords that support the spreaders.
As to Mike's question, there isn't any way to mount anything above,
since the mast doesn't "pass through" the antenna. Any other antenna
would need to go on the mast below the hex.
For what it is, the hex is fine: broadbanded, multi-band with no traps
or loading, and reasonable performance/cost/needed supporting structure.
At the end of the day, it is just a close spaced 2 element beam. No
more, no less.
Believe me, if I had a tower, i would have some serious aluminum flying
in the breeze. But we all do what we can to enjoy the hobby.
73, hope you are doing well, Steve KW3A
On 9/18/2015 2:12 PM, Alan R. Downing wrote:
> Hello Steve, are you saying that the Hex Beams come with their own mast? To
> me that sounds like a very serious flaw. Most hams put multiple antennas on
> their masts. It would be much better if the Hex Beam came with a bracket
> that would mount on the user's mast, and then everything could connect to
> it. That way you could use a 30 foot mast sticking up out of the rotor if
> you wanted. For example, my SteppIr DB36 is mounted on the mast just a few
> feet above the thrust bearing, and 7 or 8 feet above it my six meter M
> Square yagi is mounted. I wouldn't be able to do that if I had a Hex Beam
> that couldn't be attached to the bottom of my mast.
>
> Alan - N7MIT
>
>
>
>
> Alan R. Downing
> Phoenix, AZ
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of Steve Forst
> Sent: Friday, September 18, 2015 10:07 AM
> To: [log in to unmask]
> Subject: Re: another hex beam question
>
> Mike,
>
> In the ones I'm familiar with, you can't mount an antenna above the hex.
> The mounting flange from which all the spreaders emanate mounts to
> the mast. Above this flange is the center post, which has all the
> mounting lugs for the wire connections, the coax connector, and at the
> very top is the eye bolt to which all the cords attach. These cords
> go to the spreader tips.
>
> Of course, someone could have developed a different way of doing things
> and forgot to tell me.
>
> 73, Steve KW3A
>
>
> On 9/18/2015 12:37 PM, Michael Ryan wrote:
>> Hey Hexers:
>>
>> Is it possible to mount a hex beam on a mast then mount a 2ND on the same
> mast but above it? Say if you had a 40M beam. I know you can now buy 40 hexs
> but something like that up here might have some problems with the weather
> due to its huge size.
>> I really like the Mosley SF-402A which is a shortened 2 element 40M beam
> on a 14 foot boom and it weighs 48LBS at 699USC, throw in a 6 band hex for
> the same price and you gotta nice antenna system for half the cost of a
> steppir DB-18 or 2 3rds the cost of a Mosley 67B or Force 12 Delta 4XSL.
> These are the antennas I'm kicking tires on. As for the Mosely SF-402A, it
> has a forward gain of 3.9DB and a front to back of 15DB. Get a 6DB forward
> gain average on the hex, pretty good performance.
>>
>> 73:
>> Mike DE VO1AX
>>
>
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