[Lowfer] Fwd: LF: VE7Sl design Octoloop - Opera 8 with VE7BDQ

[Mitch Powell]

G'Day Laurence:
Same Octoloop here - 12 footer - with base 18 feet off ground.
What is the height of your loop for these tests ?
S/N always better here with the Octoloop - compared to active antenna -
I assume some of the apparent advantage I see is because the loop
benefits from the directional characteristics compared to the vertical.

Thanks for the report - velly interesting !
Mitch
On 2013-09-20, at 12:25 PM, Laurence KL7 L wrote:

> I shared this but have just done another overnite run with Johns signal at Op 32. Poorer conditions but the results were very similar but averaging out the loop has it - just
> 
> Laurence
> 
> 
> 
> 
> 
>> From: Laurence KL7 
>> Subject: LF: VE7Sl design Octoloop  - Opera 8 with VE7BDQ
>> 
>> 
>> I was testing overnight on 137 using VE7BDQ's Op8 signal as a reference  over a 1300 mile path (thanks John).
>> 
>> The goal to was confirm my clone of the 10ft diameter VE7SL Octoloop was working ok (thanks Steve). 
>> 
>> I was way off main bearing towards John but interesting results between  my main (and previously best here) rx antennae for 137 the L400B probe up a selected Birch tree by the lake, and this new "inter-looper".
>> 
>> Overall the loop provided an averaged out better signal/noise with last nights propagation, but as can be seen from below it wasnt always the case for every tx period - and thats not selecting the bearing with max signal from John or nulling out the do-doo from the local QRM makers. It was up to 3 or 4dB either way...
>> 
>> It was overall a close run thing but there were however more positive decodes on the loop than the probe which is good for me here, especially as I hadnt tweaked the bearings.  Im going to do the same for the loop on MF tonight if it stops raining...
>> 
>> UTC  Band  Call     Mode  S/N ref  S/N diff over probe (see bottom)
>> 
>> 13:44    136 VE7BDQ Op8 -33 dB     0
>> 13:35    136 VE7BDQ Op8 -25 dB    -1
>> 13:26    136 VE7BDQ Op8 -23 dB     -1
>> 13:18    136 VE7BDQ Op8 -23 dB    +1
>> 13:09    136 VE7BDQ Op8 -26 dB    +1
>> 13:01    136 VE7BDQ Op8 -29 dB     0
>> 12:52    136 VE7BDQ Op8 -29 dB     +2
>> 12:35    136 VE7BDQ Op8 -29 dB     -1
>> 12:18    136 VE7BDQ Op8 -31 dB     0
>> 12:10    136 VE7BDQ Op8 -24 dB     +1
>> 12:01    136 VE7BDQ Op8 -25 dB     +1
>> 11:52    136 VE7BDQ Op8 -24 dB     +1
>> 11:44    136 VE7BDQ Op8 -29 dB     -1
>> 11:27    136 VE7BDQ Op8 -31 dB     +2
>> 11:10    136 VE7BDQ Op8 -24 dB     +1
>> 11:01    136 VE7BDQ Op8 -26 dB     +1
>> 10:53    136 VE7BDQ Op8 -30 dB     -3
>> 10:44    136 VE7BDQ Op8 -28 dB     +2
>> 10:36    136 VE7BDQ Op8 -25 dB     +3
>> 10:27    136 VE7BDQ Op8 -25 dB     +1
>> 10:18    136 VE7BDQ Op8 -26 dB     -1
>> 10:10    136 VE7BDQ Op8 -30 dB     -3
>> 10:01    136 VE7BDQ Op8 -31 dB     -3
>> 09:53    136 VE7BDQ Op8 -29 dB    -3
>> 09:44    136 VE7BDQ Op8 -30 dB    -2
>> 09:27    136 VE7BDQ Op8 -28 dB     +1
>> 09:19    136 VE7BDQ Op8 -28 dB     -1
>> 09:01    136 VE7BDQ Op8 -33 dB     >
>> 08:53    136 VE7BDQ Op8 -27 dB     0
>> 08:44    136 VE7BDQ Op8 -25 dB     0
>> 08:36    136 VE7BDQ Op8 -23 dB     -1
>> 08:27    136 VE7BDQ Op8 -25 dB    0
>> 08:19    136 VE7BDQ Op8 -30 dB     0
>> 08:10    136 VE7BDQ Op8 -28 dB     -2
>> 08:02    136 VE7BDQ Op8 -23 dB     0
>> 07:53    136 VE7BDQ Op8 -23 dB     0
>> 07:45    136 VE7BDQ Op8 -26 dB     -1
>> 07:36    136 VE7BDQ Op8 -24 dB     +1
>> 07:27    136 VE7BDQ Op8 -25 dB     +1
>> 07:19    136 VE7BDQ Op8 -26 dB     0
>> 07:10    136 VE7BDQ Op8 -30 dB     +4
>> 07:02    136 VE7BDQ Op8 -29 dB     +2
>> 06:53    136 VE7BDQ Op8 -34 dB     >
>> 06:45    136 VE7BDQ Op8 -27 dB     0
>> 06:36    136 VE7BDQ Op8 -26 dB     +1
>> 06:19    136 VE7BDQ Op8 -31 dB     +3
>> 06:11    136 VE7BDQ Op8 -31 dB     >
>> 06:02    136 VE7BDQ Op8 -25 dB     +2
>> 05:53    136 VE7BDQ Op8 -26 dB     +2
>> 05:19    136 VE7BDQ Op8 -33 dB     -1
>> 05:11    136 VE7BDQ Op8 -32 dB     >
>>    ***********  18/09/2013  ***********  
>> 
>> (Positive integer means better s/n on loop in dB; ">" indicates received on loop not L400B)
>> 
>> Laurence KL7L
>> 
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