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Tropo conditions on 18/19/20 october 2019




 The general situation :

1-AIS RX  
AIS FR5DN 2019-10-19-13z AIS FR5DN 2019-10-19 NIGHT

AIS FR5DN 2019-10-20-14z ZS5 AIS 2019-10-20-08z


2-The Tropospheric ducting predictions 













3-The troposphere profile

No data...

4-The surface pressure charts
 
They can be found here


5-The visible or IR maps - Eumetsat
copyright 2019 EUMETSAT


7-The reports and some comments

No qso.

8-Equipment at FR5DN :

On 2m:
In "beacon mode", 25-30w or 10w out into 17el F9FT-13dbd yagi at 7m above ground.
Old PC dedicated to the 2m station for digital modes and AIS receiver (modified FT-2500M).
For qso, i can use up to 120w out max in shack
Mast mounted LNA with BF981 feed through coax, no measurement on NF.
Coax is a  low loss rigid coax  LCF12-50, with some ecoflex 10.
I use separate TX and RX lines, which make things much more flexible, RX line is standard RG-213.
RX is Kenwood R-5000.
TRX for beacon and qso is dedicated Kenwood TR-9000.


On 70cms:

I run a now 4x21 el yagi at 2,5m above ground (lowest antennas)
Low loss coax, mixed length of hardline 7/8 and some length of lcf12-50 and LCF14-50.
Power 40w in-shack, higher if needed.
Mast mounted LNA 33db gain, 0.3db NF. Loss before LNA is around 0,9db.
RX is separated rx : LT70s converter with FT-990, 28Mhz IF.


The antennas used for the qsos:





Tks to All, and see you next opening !

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