The Orion S meter never goes below S1 period. The Orion firmware uses S1 as
the base S meter value and will not let the S meter go below this.
I find the RX340 S meter will show some signal strength before the Orion S
meter does. I also find that in order to get similar readings between the
Orion S meter and the rx340 S meter, I have to tunr the Orion preamp on.
Once I do this, the two S meters are in amazing agreement.
Carl Moreschi N4PY
Franklinton, NC
----- Original Message -----
From: "Jim Reid" <jimr.reid@verizon.net>
To: <tentec@contesting.com>
Sent: Wednesday, March 03, 2004 1:11 AM
Subject: Re: [TenTec] guide to adjusting Orion receiver;filters and
performance
> Follow on note to the previous.
>
> Using the RX-340 which is callibrated down to about
> -140 dBm on the S meter, the noise DOES
> drop 10 or 11 dB when switching from a quiet
> frequency on the band to the Bird dummy load
> Meter drops to around -130 dBm on the dummy
> load, from -119 or so on the 40 meter band.
> This using 3.4 kHz BW on on the 340! Because
> it is noise voltage being measure, the needle is
> certainly NOT steady at a fixed reading; thus the
> abouts/arounds above and in the previous note.
>
> Carl how does your RX-340 track the noise vs.
> the Orion meter?
>
> The Orion S meter never drops below S1 here, when
> connected to a dummy load; of course, no dBm scale
> on the Orion.
>
> 73, Jim KH7M
>
> _______________________________________________
> TenTec mailing list
> TenTec@contesting.com
> http://lists.contesting.com/mailman/listinfo/tentec
_______________________________________________
TenTec mailing list
TenTec@contesting.com
http://lists.contesting.com/mailman/listinfo/tentec
|