Dear Tom,
thanks for your report. The 9.1dB might be exactly. The antenna
current increased from 0.9 to 2.5A, gives 8.87dB.
There is still a little more power in reserve, up to 3A.
ON6RR also reported a lower fieldstrength now compared with the beginning at
new year.
When I began the QRO-transmitting last night the output voltage was 80V with
2.5A, after 2hrs transmitting only 60V with 2.5A.
??
The amplifier is commercial broadband up to 150MHz with 200W out, very
linear. I did not yet measure the power consumption, but it seems to be
rather high. Although the heating is switched down in the night, the shack
was cosy warm in the morning ;-)
73 Walter
-----Ursprüngliche Nachricht-----
Von: Thomas Kölpin <[email protected]>
An: [email protected] <[email protected]>
Datum: Montag, 10. Januar 2005 09:57
Betreff: LF: DI2AG QRO-Test
Hello group, hello Walter,
during the QRO test last night the signal of DI2AG increased about 9.1
dB here, giving the following field strength values:
QRP 2005-01-09 2108 UTC 55 uV/m
QRO 2005-01-09 2356 UTC 157 uV/m
QRP 2005-01-10 0623 UTC 55 uV/m
The QRP values were about 2.1 dB lower than during the first days of
transmission (70 uV/m).
Distance between DI2AG and DK1IS is about 52 km.
73,
Tom, DK1IS
JN59WK
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