[Elecraft] P3 level accuracy

[Joe Subich, W4TV]

 > I've had several replies, all report the XG-2's -73dBm level to be
 > between about -78dBm and -80dBm on the P3, so it's at least
 > consistent, and will, no doubt receive Elecraft's attention in
 > due course!

Well, my XG-2 shows up at -68 to -70 dBm on my P3.  The P3 shows
a no signal noise floor of -150dBm (RX Ant) in a 2 KHz span.  The
K3 has been calibrated to this same XG-2 using the K3 Utility and
reads S9.  The 1 uV output shows up at -105dBm with the same test
conditions.

The K3 has the IF output modification fitted.

73,

    ... Joe, W4TV


On 9/27/2010 2:22 PM, Stephen Prior wrote:
> Hi Geoff
>
> I've had several replies, all report the XG-2's -73dBm level to be between
> about -78dBm and -80dBm on the P3, so it's at least consistent, and will, no
> doubt receive Elecraft's attention in due course!
>
> 73 Stephen
>
>
> On 27/09/2010 19:18, "Geoffrey Downs"<geoffreywd at madasafish.com>  wrote:
>
>>
>> Dear Stephen,
>>
>> My XG2 at 50 microvolts output nominal also shows near enough -78dbm on the
>> P3. At 1 microvolt output it's about -112 dbm. The battery isn't new but
>> doesn't get a lot of use. All after due recalibration procedures.
>>
>> 73 to all
>>
>> Geoff
>> G3UCK
>>
>> ----- Original Message -----
>> From: "Stephen Prior"<sjp at sjprior.fsnet.co.uk>
>> To: "elecraft"<elecraft at mailman.qth.net>
>> Sent: Saturday, September 25, 2010 4:50 PM
>> Subject: [Elecraft] P3 level accuracy
>>
>>
>>> I have just run the RF gain calibration on the K3 via the utility (and
>>> calibrated the S meter too) using my XG-2 on 40m.  Default values of the S
>>> meter give S9 as it should with 50uV from the XG-2.  However, the P3 shows
>>> a
>>> level of -78dBm which seems to be outside the P3's published spec of +/-
>>> 3dB.  A calibration routine for the P3 utility has been mooted for the
>>> future, but I am wondering whether it's normal for the level to be so far
>>> out.
>>>
>>> I'd be interested in what other XG-2 and P3 owners find.  The XG-2 is
>>> running on a new lithium button cell.
>>>
>>> 73 Stephen G4SJP
>>
>>
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>