[AK-VHF] NET: 29 August - 146.52 FM

[Edward R Cole]

It was a quiet day in Lake Wobegone.

Errr only had one checkin for the net:
KL6M - S5 on my eme array with preamp.  Noise floor was S4

Mike commented that my signal was weak so figured it was 
propagation.  But he then told me I was stronger on first antenna I 
started the net with.
So I quickly changed antenna and his signal rose to S7 on the FT-736R 
(with no preamp).  This antenna is two 11-element KLM yagis attache 
to the top of the crossbeam of my 6m eme array (two 7-element LFA 
yagis) mounted 12-foot below the 2m yagi.  2m antenna at 45-foot above ground

The feedline is shorter to it (50-foot of LMR-400+33-foot 
LMR-600+about 25-foot of LMR-400) with an est loss of 1.2 dB vs 1.7 
dB to 2m eme array.  Also KLM yagis are tuned for best SWR at 146.5 
MHz (net was on 146.52).

Mike copied me over S9 with the two KLM-11.  Very surprising!  The 
two towers are separated 180-feet (so could the 6m tower be in a "sweet spot")?

Then we switched to 223.50 FM with Mike on his discone antenna - weak 
copy but readable.  Mike had put up a new 7-element 222 yagi which he 
wanted to test.  What a difference; his signal jumped to max signal 
strength on my Bridgecom BCM-220.  He saw a marked increase in my 
signal, as well.  GOOD DEAL Mike!

Mike figured the gain at 12 dBi for that yagi and I surmise about 
3-dB more gain for my two Cushcraft 220-11 yagis.  We both were 
running about 25w.

Next week net will move back to 144.200

73, Ed


At 09:18 PM 8/28/2020, Edward R Cole wrote:
>Another month has gone by.  Last Saturday Net will be on 146.52  FM, 
>plus I will also monitor 223.50 FM.
>
>Last weekend we successfully replaced the azimuth rotator for our 6m 
>dual-yagi system.  There are also two 2m 11-element yagis mounted 
>above the 6m antenna at 45-feet.  We will experiment running 100w FM 
>using the FT-736R with these antenna instead of using the 2m eme 
>array of four yagis.
>
>Should work good (I see the 146.94 repeater at S9+60 dB using this array).
>
>73, Ed - KL7UW
>   http://www.kl7uw.com
>Dubus-NA Business mail:
>   dubususa at gmail.com
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73, Ed - KL7UW
   http://www.kl7uw.com
Dubus-NA Business mail:
   dubususa at gmail.com