[time-nuts] Frequency doubler 5/10 and distribution amplifier for Lucent KS-24361

billriches bill.riches at verizon.net
Sat Jan 3 15:45:16 EST 2015


Hi Gerhard,

Wow - what a nice piece of work.  If you or anyone in our group is going to make boards or completed units I would be interested in two of them.  I do not have the expertise to build them.

73,

Bill, WA2DVU
Cape May, NJ 

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Bob Camp
Sent: Saturday, January 03, 2015 8:48 AM
To: ghf at hoffmann-hochfrequenz.de; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Frequency doubler 5/10 and distribution amplifier for Lucent KS-24361

Hi

So is any of the rest of the family still speaking to you? :) That’s a lot of work. Very nicely done and documented !!

————

Phase noise or ADEV would be well worth checking out. I see no reason why they would be a problem, but one never knows until the test is run. 

—————

I would suggest *some* resistance to ground on the outputs of the distribution amp. Without any R, you can get into ESD issues when you connect a cable. Is it a big deal - not really. 

Bob



> On Jan 2, 2015, at 8:43 PM, Gerhard Hoffmann <dk4xp at arcor.de> wrote:
> 
> Hi, all,
> 
> over the Christmas season, I have designed and built a frequency 
> doubler from 5 to 10 MHz and a distribution amplifier for the Lucent 
> KS-24361. A preliminary writeup is under
> 
> < http://www.hoffmann-hochfrequenz.de/downloads/DoubDist.pdf >
> 
> It features  4 or 5   10 MHz 10 dBm outputs and an optional 1PPS on SMA with CMOS levels into 50 Ohm.
> It is a small board to be mounted inside the KS-24361.
> 
> Comments invited.
> 
> regards,
> 
> Gerhard
> 
> 
> 
> 
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