I remember the "Fast and Damn Fast Buffer Amp" data sheet. LH0036? I may
not be remembering the correct part number. I used to have a copy of
that data sheet, as well as another that was labeled "DC to Daylight" on
the data sheet.
DaveD
On 11/19/2014 2:42 PM, Mike Feher wrote:
Hi Doug -
Wow. Wonder how many on here remember or know about National's "Damn Fast"
line, HI. I used them all the time, and, still have a few. 73 - Mike
Mike B. Feher, EOZ Inc.
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960 office
908-902-3831 cell
-----Original Message-----
From: time-nuts [mailto:[email protected]] On Behalf Of Doug Ronald
Sent: Tuesday, November 18, 2014 6:21 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] ks... answers The emails are getting long
Importance: Low
I doubled my Austron 1250A from 5 MHz to 10 MHz with 2 NPNs fed in push-pull
and output in parallel with a tuned circuit. Before buffering it with an
LH0063, I fed the signal through a 10 MHz crystal, purchased at a local surplus
electronics store for $0.95. The 2nd harmonic is about 70 dB down.
-Doug, AE6SY
-----Original Message-----
From: time-nuts [mailto:[email protected]] On Behalf Of Bob Camp
Sent: Tuesday, November 18, 2014 3:11 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] ks... answers The emails are getting long
HI
Actually there are three different approaches to the “double 5 MHz” question.
Roughly 99.99% of all doubler / tripler OCXO’s out there do the trick with a
simple single transistor stage and a tuned tank. Follow it up with a tuned
single transistor output amp. Cheap, easy, not very fancy, gets people mad when
mentioned. It works plenty good enough. The basic design approach dates back to
tube based multipliers done in the 1920’s. Just about any transmitter design
textbook from 1930 through 1960 has design charts and tube based examples.
Bob
On Nov 18, 2014, at 4:26 PM, paul swed <[email protected]> wrote:
Don
The two units work together by a buggy cable from what I have heard so far.
The Ref0 is the master that drives stuff it connects to REF1 that
disciplines REF0.
If GPS goes away or the ref1 it all keeps ticking. This is been teh
system design for about 20 years.
Many of us have the ref1 only and the internal osc is 5 Mhz so thats
why you have seen discussions on multipliers here. Tap the 5 Mhz
double it filter it and buffer it. there seem to be 2 schools of
thoughts on the process. Balanced mixer or Wenzel.
I would have hacked the answer already. But I need to keep my ref1
running so that it ages in. ASI will refund your money if bad. But only in 30
days.
I do like what I see from the KS-... Can never remember the number.
Regards
Paul
WB8TSL
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