No problem Roelof
The Opera 'gang seem to always up for a importune sing along ..)
Joe was running op32 , Actually quite handy , If you still have the
'tape , just set opera to 136 and re-run the recording , you should
see spots down to -40 dB s/n after the first decode , the dynamic list
will update [ if your pc is web linked] then low limit round -45 dB , if
all works , that's probably the first op32 over 477k at range ...% fade
should track the qsb in this case ...
RTL dongles , Yes I think those stared with a bad-press , but in
reality , work very well , in direct sample, there is a loss of
sensitivity , but your entering the rx chain in the middle, it
should be looking at the out put of the internal down-convertor ..
What happens on 136 , with the 530 Low pass , are you able to monitor 136
op32 ? and 477 op8 ?
73-Graham
--------------------------------------------------
From: "Roelof Bakker" <[email protected]>
Sent: Friday, April 14, 2017 4:04 PM
To: <[email protected]>
Subject: Re: LF: Re: [rsgb_lf_group] VO1NA 477 OP8 :Start 2300 finish
0900 50 watts to monopole.
Hello Graham,
Thanks for the encouragement.
I will add Opera 477 to my listening set up.
This can be done by either using a fourth software receiver in
SDRConsole running on an Afedri SDR. However, lately I have been
playing on NAVTEX 518 kHz with a 20 Euro RTL-SDR V3. This has been a
revelation and it is about on par with the Afedri!
It is a bit deaf at LF, hence I am using a tuneable pre-amplifier
preceded by a 530 kHz low pass filter. This way it becomes a decent
receiver.
Just for fun, I will set it up for Opera 477 kHz and let it run
overnight.
73,
Roelof, pa0rdt
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
|
