[Elecraft] 2 dB better reception in JT65 mode
Edward R Cole
kl7uw at acsalaska.net
Sat Jan 25 12:50:40 EST 2014
Peter,
EME is all about detecting the weakest signal (e.g. MDS) so I would
attribute this to the low-phase noise of the K3 LO. In fact one of
the determining factors for my to chose it as my eme IF
radio. Dynamic range would be more important in HF where very strong
signals are present at adjacent frequencies; something all eme'rs
would love to hear!
The other attributes that make the K3 ideal as eme IF are:
1) Excellent transverter interface, KVX3
2) Excellent frequency stability with the EXREF option
3) Design for CW
4) Design for soundcard interface for data modes.
I just restored my 16-foot dish for 1296 reception so will be looking
for weak signals from the Moon with my K3/10 + 1296/28 transverter.
enjoy the extra dB!
73, Ed - KL7UW
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Subject: [Elecraft] 2 dB better reception in JT65 mode
Message-ID: <[email protected]>
Content-Type: text/plain; charset="us-ascii"
I have compared my brand new K3 against my IC756pro2 in JT65b mode while
doing EME on 432 MHz.
With the same transverter, antenna, preamp etc. I see stations 2 dB better
with the K3.
It also made me see another station at -30 dB that I could not detect on the
756.
I just wonder, is this because the famous low noise architecture or just the
clean audio of the K3?
The K3 is connected via the line-out to a Delta44 soundcard at the PC.
Audio levels have been carefully checked to be sure I am doing exactly the
same to both rigs.
The RF path 28 MHz > 432 MHz > was exactly the same all the time. I switched
with relays between the rigs.
Is there any other K3 owner who did the same test on here?
73, Peter PA2V
73, Ed - KL7UW
http://www.kl7uw.com
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