件人︰ Wayne Burdick n...@elecraft.com
收件人︰ Elecraft Reflector elecraft@mailman.qth.net
副本(CC)︰ elecraft...@yahoogroups.com elecraft...@yahoogroups.com
傳送日期︰ 2015年02月14日 (週六) 7:34 AM
主題︰ [Elecraft] Update to KSYN3A FAQ (some measured dynamic range
numbers)
Hi all,
I've updated the KSYN3A
If both RX and TX are using the same synthesizer, TX phase noise
should be lowered.
Not necessarily -- it depends on the design. Some rigs have low phase
noise on RX but not on TX.
The noise that we hear on transmitted signals, or through reciprocal
mixing in our receivers, is always the
: Johnny Siu vr2...@yahoo.com.hk
To: Wayne Burdick n...@elecraft.com; Elecraft Reflector
elecraft@mailman.qth.net
Cc: elecraft...@yahoogroups.com elecraft...@yahoogroups.com
Sent: Friday, February 13, 2015 4:19 PM
Subject: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)
I
...@yahoogroups.com
Sent: Saturday, February 14, 2015 12:57 PM
Subject: Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range
numbers)
Hi Johhny,
I'll probably get flamed for saying this, or someone more knowledgeable that I
will point out how ignorant I am, but here is my
On Fri,2/13/2015 9:42 PM, Johnny Siu wrote:
If both RX and TX are using the same synthesizer, TX phase noise
should be lowered.
Not necessarily -- it depends on the design. Some rigs have low phase
noise on RX but not on TX.
73, Jim K9YC
My interest in this update is a reduction in interference in an SO2R
environment with two K3s.
What is the conventional wisdom regarding the potential improvement in this
particular area?
73, Ken, K6LA / VY2TT
__
Elecraft
Hi all,
I've updated the KSYN3A FAQ with the following information regarding testing of
a K3 with the new synthesizer performed by Rob Sherwood, NC0B.
* * *
Q: What is the approximate 2-kHz dynamic range (IMDDR3) of the K3 when using
the new synthesizer?
A: Our tests show in excess of 105 dB
寄件人︰ Wayne Burdick n...@elecraft.com
收件人︰ Elecraft Reflector elecraft@mailman.qth.net
副本(CC)︰ elecraft...@yahoogroups.com elecraft...@yahoogroups.com
傳送日期︰ 2015年02月14日 (週六) 7:34 AM
主題︰ [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)
Hi all,
I've updated the KSYN3A
VR2XMCK-Line + KX3 + HR50
寄件人︰ Wayne Burdick n...@elecraft.com
收件人︰ Elecraft Reflector elecraft@mailman.qth.net
副本(CC)︰ elecraft...@yahoogroups.com elecraft...@yahoogroups.com
傳送日期︰ 2015年02月14日 (週六) 7:34 AM
主題︰ [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)
Hi
Argh! That will make the K3 second to the Flex 6700 in Sherwood's
table G although the 100 KHz blocking will be better than the A/D
Limited for the 6700.
73,
... Joe, W4TV
On 2015-02-13 6:34 PM, Wayne Burdick wrote:
Hi all,
I've updated the KSYN3A FAQ with the following information
On 2015-02-13 10:08 PM, Chortek Bob via Elecraft wrote:
The new synthesizer has essential the SAME IMDDR 106 or 103
depending on the filter bandwidth.
Incorrect! You are comparing measurements by different labs with
different test equipment and procedures.
Sherwood measured 104 dB w/200 Hz
the same conditions as the
current KSYN3).
TNX,
Johnny VR2XMC
寄件人︰ Don Wilhelm w3...@embarqmail.com
收件人︰ Johnny Siu vr2...@yahoo.com.hk; Elecraft Reflector
elecraft@mailman.qth.net
傳送日期︰ 2015年02月14日 (週六) 8:44 AM
主題︰ Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers
That's a far ways from -89 dB that you
quote.
The ARRL review in the April 2008 issue of the K3/10 showed reciprocal
mixing as -95 dBc at 2 kHz spacing.
The ARRL review in the Jan 2009 issue of the K3/100 showed reciprocal
mixing as -86 dBc at 2 kHz spacing.
This is the same lab. Dunno
VR2XMC 寄件人︰ Jim Brown j...@audiosystemsgroup.com
收件人︰ elecraft@mailman.qth.net
傳送日期︰ 2015年02月14日 (週六) 11:00 AM
主題︰ Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)
On Fri,2/13/2015 4:19 PM, Johnny Siu wrote:
Again, IC7850 is known foir extremely low phase noise
On Fri,2/13/2015 4:19 PM, Johnny Siu wrote:
Again, IC7850 is known foir extremely low phase noise.
Is it known for it's low phase noise on TX?
73, Jim K9YC
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Sent: Friday, February 13, 2015 3:34 PM
Subject: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)
Hi all,
I've updated the KSYN3A FAQ with the following information regarding testing of
a K3 with the new synthesizer performed by Rob Sherwood, NC0B.
* * *
Q: What
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