[TowerTalk] Field Day

[Kim Elmore]

'Zactly. The value of 10-15 dB of attenuation can work wonders.

Kim N5OP


On 7/4/2017 5:48 AM, Ed Sawyer wrote:
> I have done quite a bit of "in band" low power 2 radio work.  At 100 W, 2 A4
> tribanders, tip to tip, 225ft separation  should have still audible sounds
> on the cross band portion CW vs SSB - maybe 2 - 3 S units.  However 10 -
> 15dB of attenuation on the receivers should kill it if it becomes
> bothersome.  If you are not seeing that, consider grounding the systems
> together and trying other radios (making sure the SSB radio is not over
> driving).
>
>   
>
> I have cross polarized 10, 15, 20M systems that are separated by 200 - 400
> feet and they are virtually silent on the noise floor 25khz away - same mode
> band - using 100W.  Using amps, you can hear them but the 15dB of pad kills
> it.
>
>   
>
> On 40 - 160, try running a long - directional beverage, separated and to the
> side of the antenna if you have the room.  At 100W, and with the improved
> S/N ratio, you should do really well.  Potentially both stations could use
> the same beverage for receive.
>
>   
>
> Ed  N1UR
>
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-- 

Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP 
SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)

/"In theory there is no difference between theory and practice. But, in 
practice, there is." //– Attributed to many people; it’s so true that it 
doesn’t matter who said it./