Helo Stefan,
For info, here I am using a MFJ 834 RF Ammeter. It is working well
on MF band, it just need to be first re-calibrate on MF band (only one variable
resistance to adjust) using a low power signal into a 50 Ohms pure resistive
load.
It
is quite linear for RF current measurement from 25 mA to 3 Amperes, in 3 swiched
scales.
Using it on the 50 Ohms coaxial cable, just after your TX output, you
have a good estimation of your TX power output from 30 milli watt to 450
watts.
You can also use it on the cold end of the antenna side. Depending at
the overall antenna system resistance, you can read the real antenna
current…
73
de Andy.
Sent: Thursday, October 22, 2015 11:09 PM
Subject: LF: M0LMH
Hi
MF,
Since a few hours i'm transmitting WSPR with the variable mains
transformer turned to 0%. So just the driver is switching the FETs. Anyway a few
mW TX power seem to be generated and radiated. I can see no reading on the RF
amperemeter.
Anyway i got 15 spots:
| Timestamp |
Call |
MHz |
SNR |
Drift |
Grid |
Pwr |
Reporter |
RGrid |
km |
az |
| 2015-10-22 20:14 |
DK7FC |
0.475685 |
-22 |
0 |
JN49ik |
1 |
M0LMH |
IO93gx |
862 |
310 |
| 2015-10-22 20:24 |
DK7FC |
0.475683 |
-19 |
0 |
JN49ik |
1 |
F5WK |
JN18hp |
452 |
261 |
| 2015-10-22 20:44 |
DK7FC |
0.475682 |
-21 |
0 |
JN49ik |
1 |
PA0A |
JO33de |
449 |
339 |
| 2015-10-22 20:14 |
DK7FC |
0.475682 |
-26 |
0 |
JN49ik |
1 |
PA0RDT |
JO11tm |
428 |
305 |
| 2015-10-22 20:14 |
DK7FC |
0.475683 |
-17 |
0 |
JN49ik |
1 |
PA3ABK |
JO21it |
386 |
315 |
| 2015-10-22 20:14 |
DK7FC |
0.475683 |
-15 |
0 |
JN49ik |
1 |
DH5RAE |
JN68qv |
345 |
98 |
| 2015-10-22 20:14 |
DK7FC |
0.475683 |
-18 |
0 |
JN49ik |
1 |
PI4THT |
JO32kf |
336 |
338 |
| 2015-10-22 20:14 |
DK7FC |
0.475683 |
-15 |
0 |
JN49ik |
1 |
DJ0ABR |
JN68nt |
329 |
101 |
| 2015-10-22 20:14 |
DK7FC |
0.475683 |
-22 |
0 |
JN49ik |
1 |
DG8RW |
JN69cv |
257 |
77 |
| 2015-10-22 20:14 |
DK7FC |
0.475682 |
-23 |
0 |
JN49ik |
1 |
DF2JP |
JO31hh |
256 |
325 |
| 2015-10-22 20:54 |
DK7FC |
0.475683 |
-27 |
1 |
JN49ik |
1 |
DC0DX_H |
JO31lk |
255 |
332 |
| 2015-10-22 20:24 |
DK7FC |
0.475684 |
-24 |
0 |
JN49ik |
1 |
DB1EPO |
JO31hg |
252 |
325 |
| 2015-10-22 20:14 |
DK7FC |
0.475684 |
-21 |
0 |
JN49ik |
1 |
DF6NM |
JN59nj |
175 |
91 |
| 2015-10-22 20:14 |
DK7FC |
0.475684 |
-7 |
0 |
JN49ik |
1 |
DK2DB |
JN48fw |
58 |
198 |
| 2015-10-22 20:34 |
DK7FC |
0.475686 |
-10 |
0 |
JN49ik |
1 |
DF8UO |
JN48ex |
56 |
206 |
M0LMH is the best distance.
Also in daytime i can see that M0LMH is receiving me, often beeing the only one
from UK.
Does someone know him and his equipment? Would be interesting to
know! In IO93GX, there is not population. Certainly one reason for the good
results...
73, Stefan
PS: Now
QRO...
