[hpsdr] ANAN-100D TX Spectrum

[Warren C. Pratt]

Hello Jacques,

Here's one idea:  Please check to be sure that you have your ALC ENABLED
(the ALC box should be checked).  I don't know if this is the problem you're
seeing; however, failure to use the ALC can cause this and worse.  The ALC
should ALWAYS be enabled.

I hope that helps.  If not, I suppose further investigation will be
required.

73,
Warren  NR0V

-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org
[mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of f6bki at orange.fr
Sent: Sunday, May 12, 2013 3:51 PM
To: hpsdr at lists.openhpsdr.org
Subject: [hpsdr] ANAN-100D TX Spectrum

***** High Performance Software Defined Radio Discussion List *****

Hello all , today I have  checked the RF Spectrum on transmit of my new
ANAN-100D.
On 6m there are plenty of spurious about 50 dB below the carrier from 50MHz
down to few MHz .
The ratio Spurious/Carrier  is almost independant of the power level, in
comparaison an IC7000 is at least 20 dB better around the carrier and much
better away from the carrier. .
On the other bands the spurious are about -60 dB below the carrier .
Looks very high !!!! No way to drive an amplifier with such a signal!!!
Mesurements have been made on a 50 Ohms load on an  ADVANTEST Analyseur .

As anybody checked his ANAN-100D ??

73
Jacques F6BKI



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