Spots from the Opera app
20:12 477 F6CNI de DF2JP Op8 -32 dB F:8% in
Meerbusch
20:57 477 F6CNI de DF2JP Op8 -30 dB F:5% in Meerbusch
20:57 477 F6CNI de G6AVK Op8 213 mi -27 dB F:24% in Essex, JO01ho.
with 0,0012w + Inv L
73-G,
Sent: Monday, July 27, 2015 3:17 PM
Subject: LF: Re: F6CNI to night testing a tuned loop TX on
MF
Thanks Domenico !
I am now transmitting, and continue at 13 % TX fraction during all the
night.
I hope you can copy my signal, perhaps around 2200 TU or later.... HI
Andy.
Sent: Monday, July 27, 2015 3:56 PM
Subject: Re: LF: F6CNI to night testing a tuned loop TX on
MF
Hello Andy, all
thanks for the info and for
the activity.
I'm at your S-E direction so maybe i have some possibility
to catch your signal. So i will listen in WSPR2 and OP8.
73 and
GL
Domenico, iz7slz
On 7/27/2015 3:18 PM, F6CNI - Andy -
JN19QB wrote:
Hi to
all.
This evening,
I’ll transmit to test a single turn loop on MF.
- 1 Watt HF TX ;
- Mode WSPR 2 and perhaps also OP
8
- Loop description :
- Vertical position, top at 11 meters,
bottom at 1 meters over ground ;
- Each side wire is 7 meters long ;
- One single turn copper wire 10 mm
diameter ;
- Maximun lobe NW / SE. Note : at 600 km,
the front / side lobe is about 6 dB ;
- Impedance 0.21 - 113 j ;
- Current wire 2.0 Amperes for 1 Watt
output TX ;
- Top loading using a 3C90 tore isolated
transformer ;
- Base tuning with a variable in parallel
with a fixe capacitor. Total needs around 3000 pF of total capacitance
;
- 50 Ohms coaxial to the TX ;
- Minimum SWR at TX when the CV is well
tuned : below 1.3 / 1.
Best
73.
Andy.
F6CNI
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