In a recent message, Alan writes
So you would expect it to read 3 dB lower (half the power), which is
half an S unit.
This is something that has always puzzled me, Alan. I agree that -3dB is
half the power (in watts), but S-meter calibration is related to
(micro)voltage.
3 dB?
I've seen an S unit described as 6 dB -- double the *voltage*, or four
times the power. Or in recent years some radios do 5 dB -- keep a linear
string of LED's where over S9 is in 5 dB increments and below S9 is in 5 dB
S units.
Your assertion is the first time I have ever heard an S unit
Perhaps I missed the answer to this...
My SVGA external monitor shows signals about 1/2 to one S unit lower
than my P3 does on the native screen... What am I missing?
If I use Peak Hold, there is a clear 1/2 to one S-Unit difference in teh
display height...
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Thanks and 73's,
For equipment,
Hi David,
Check your inbox/spam folder, I emailed you directly on this.
-Paul
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Nothing, but THANK YOU... Can you remail me please...
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For equipment, and software setups and reviews see:
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For
For a continuous CW tone, the level should be the same on the P3 and the
external monitor. For SSB, the SVGA display should read 1/2 S-unit lower.
The reason is that, unlike CW, an SSB signal is spread out in frequency.
Since the SVGA monitor has twice the frequency resolution than the P3
I have similar issue. Just built the P3 and it worked immediately. I shut
down and returned a few hours later and no signals. It's like the IF is no
longer getting to the P3. Weird.
Hope someone has the fix soon.
Pete WK8S
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Pete, I have experienced the same thing. It seems the IF BNC connector on
back of the rig is a bit touchy and I have difficulty getting a really
solid connection.
If I move the rig around any at all the BNC disconnects. Playing with the
connector seems to get me up and running again.
I'm sorry I didn't post the fix. As it turned out, the RF board holding
the BNC jacks was bad. Elecraft sent a replacement and I was up and running
again.
73, Gary W7TEA
-
73,
Gary W7TEA K3 #1001, #5763
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Re-seated the internal coax to the P3 RF bd. That seems to have fixed the
problem, at least for now. We'll see if its a permanent fix.
Pete WK8S
Subject: Re: [Elecraft] K3/P3 issue--no signals
To: elecraft@mailman.qth.net
Message-ID: 1324131709649-7104107.p...@n2.nabble.com
Content-Type
Left my rig for a couple of hours this morning and when I returned, my P3 was
no longer reading band signals. It is as if it is only hearing internal rx
noise with the grass well below S0 and RefCal cranked up to 145 and
beyond. The K3 seems to hearing just fine. Have restarted both units,
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