[TowerTalk] M2 7&10-30LP8 vs 2 or 3 element tribander

[kc4pe]

Currently I have a 4 element mono at 120 feet...a 4 element quad at 80 
feet and a 12 element log at 100"....

The Quad is the quietest....due to a continuous loop...

The 4 element opens the bands...but then plays along side of the log 
until the MUF goes high and then the log takes over....

The biggest help in RX performance is a diversity system a-la the Anan's 
SDR system, or better yet the new DX Engineering NCC-2, when you play 
with phase and amplitude in eliminating all kind of noise it really 
makes a difference...

1 or 2 db never really makes the scoreboard, except on rare occasions....

If I had to build the ultimate system it would be a log on a 120 foot 
tower ..with a trolley that would let me run the antenna up and down the 
tower to follow the MUF..(Why 120 feet...it's 2 wl on 20 ..Read Jim 
Lawson's W2PV's book..!!)

I built on at 75 feet with a TH11 and it was a game changer...

Have Fun..

-Bill - KC4PE..



On 12/9/2016 1:29 PM, Jim Brown wrote:
> In my experience, the only way to compare any system with such a small 
> difference in performance is by A/B testing. That means the two 
> antennas mounted close to each other with elements in line (to 
> minimize coupling between them) and at the same height, with a LOT of 
> testing to average out the effects of QSB (or by studying cluster spots).
>
> Does 1-2 dB matter?  For casual operation, no. For serious weak signal 
> work, when your signal is at the level of the other guy's noise, it 
> can matter a LOT. But anecdotal comments from owners of one antenna or 
> the other are hardly meaningful, and often based more on the pride of 
> the owner in the choice he made in buying what he bought. :) If you 
> doubt this statement, spend a few hours reading the archive of the 
> email reflector devoted to ANY manufacturer's radio.
>
> 73, Jim K9YC
>
>
> On Fri,12/9/2016 6:00 AM, Richard Thorne wrote:
>> The best I can tell is the log  has about 1db to 2db less gain as 
>> compared to other non-trapped multiband designs. 10.5dbi at 65' vs 
>> 11.4 to 12.5 dbi (depending on band).
>>
>> If anyone has the M2 log or other brand log and has compared them to 
>> traditional yagi's on short booms I'd be interested to hear your 
>> experiences.
>
>
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