Hi Roman.
My current TX produces 100 Watts, and the calculated efficiency of the
antenna is abt 0.6%:
0.255 Ohm radiation resistance calculated with MMANA-GAL and a measured
total antenna system impedance between 42 and 48 Ohms depending on the
weather / water content in the soil.
So 0.6 Watt ERP (theoretically) i.e. +28dBm. But actual ERP is certainly
(much?) less because of nearby trees etc: -6 dB (Stefan) of possibly
even -10 dB (Mal)
Regards, Minto pa3bca
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-----Original Message-----
From: Roman RW3ADB
Sent: Wednesday, February 06, 2013 22:37
To: [email protected]
Subject: RE: LF: Re: WSPR MF
GE Minto!
TKS!
Who mny W? Whats an ant are you use?
Roman RW3ADB.
Thu Feb 07 2013 01:03:14 GMT+0400 (Local Standard Time) пользователь Minto
Witteveen ([email protected]) написал:
I am currently TX-ing WSPR-15 @ 472800..
Just finished WSPR-15 programming in my PIC controlled AD9850 + 100W TX
'Normal' WSPR works fine (got lots of spots today) but with a tone
separation of only 0.1831 Hz for WSPR-15 the error in FSK tone separation
is nearly 5%:
Minimum stepsize of the AD9850 = 125.000.000 / (2^32) = 0.0291 Hz. 6 *
0.0291 = 0.1746 Hz in stead of 0.1831 = -4.6% too low
We'll see.
Minto pa3bca
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Ceterum censeo Carthaginem delendam esse
-----Original Message-----
From: Roman RW3ADB
Sent: Wednesday, February 06, 2013 21:17
To: [email protected]
Subject: RE: LF: WSPR MF
Who is planning to TX today?
Roman RW3ADB.
> Wed Feb 06 2013 21:38:39 GMT+0400 (Local Standard Time) пользователь
> Andy ([email protected]) написал:
>
> WSPR-15
> 2300 -34 -1.3 0.475805 0 M0BMU IO91 37
> 0000 -28 -0.6 0.475811 0 M0BMU IO91 37
> 0030 -34 0.1 0.475811 0 M0BMU IO91 37
> 0030 -18 -4.3 0.475821 0 DK7FC JN49 30
> WSPR-2
> 130205 2036 7 -25 -0.2 0.475696 DK7FC JN49
> 30 0 8 0
> 130205 2208 8 -23 -0.6 0.475785 PA0A JO33
> 33 0 1 0
> 130205 2254 9 -22 -0.5 0.475695 DK7FC JN49
> 30 0 2 0
> 130205 2306 12 -20 -0.6 0.475695 DK7FC JN49 30
> 0 1 0
> 130205 2318 14 -17 -0.5 0.475695 DK7FC JN49 30
> 0 1 0
> 130205 2324 9 -22 -1.1 0.475695 DK7FC JN49
> 30 0 1 0
> 130205 2330 7 -23 -0.5 0.475695 DK7FC JN49
> 30 0 55 0
> 130205 2342 16 -15 -0.7 0.475695 DK7FC JN49 30
> 0 1 0
> 130205 2348 9 -20 -0.2 0.475696 DK7FC JN49
> 30 1 9 0
> 130206 0012 11 -19 -0.4 0.475695 DK7FC JN49 30
> 0 22 0
> 130206 0024 7 -25 -0.3 0.475695 DK7FC JN49
> 30 0 8 0
> 130206 0036 10 -19 -0.3 0.475696 DK7FC JN49 30
> 0 1 0
> 130206 0042 10 -19 -0.6 0.475696 DK7FC JN49 30
> 0 1 0
> 130206 0048 6 -23 -0.2 0.475696 DK7FC JN49
> 30 0 2 0
> 130206 0100 7 -23 -0.3 0.475696 DK7FC JN49
> 30 0 1 0
> 130206 0106 7 -22 -0.2 0.475696 DK7FC JN49
> 30 0 31 0
> 130206 0112 5 -24 -0.3 0.475696 DK7FC JN49
> 30 0 9 0
> 130206 0118 6 -24 -0.2 0.475695 DK7FC
> JN49 -1 3769 0
> 130206 0212 5 -23 -0.4 0.475696 DK7FC JN49
> 30 1 7912 -12
> 130206 0218 8 -22 -0.3 0.475696 DK7FC JN49
> 30 0 4 0
> 130206 0230 9 -21 -0.5 0.475696 DK7FC JN49
> 30 0 3 0
> 130206 0248 10 -20 -0.3 0.475696 DK7FC JN49 30
> 0 1 0
> >
>
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