Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-16 Thread Oliver Dröse
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

Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-14 Thread Ian White
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

Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-14 Thread Chortek Bob via Elecraft
: 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

Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-14 Thread Chortek Bob via Elecraft
...@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

Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-14 Thread Jim Brown
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

Re: [Elecraft] Update to KSYN3A

2015-02-14 Thread Ken Widelitz
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

[Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-13 Thread Wayne Burdick
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

[Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-13 Thread Johnny Siu
  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

Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-13 Thread Don Wilhelm
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

Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-13 Thread Joe Subich, W4TV
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

Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-13 Thread Joe Subich, W4TV
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

[Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-13 Thread Johnny Siu
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

Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-13 Thread dave
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

[Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-13 Thread Johnny Siu
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

Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-13 Thread Jim Brown
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 __ Elecraft mailing list Home:

Re: [Elecraft] Update to KSYN3A FAQ (some measured dynamic range numbers)

2015-02-13 Thread Chortek Bob via Elecraft
...@yahoogroups.com 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