RadioBanter - View Single Post

September 3rd 04, 03:05 PM

From: "Leon Heller"
Newsgroups: rec.radio.amateur.homebrew
References:

Date: Fri, 3 Sep 2004 08:44:37 +0100
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"Jim Adney" wrote in message
.. .
On 1 Sep 2004 09:59:49 -0700 (Tom Bruhns) wrote:

Suggestion: just get a 100MHz TTL oscillator. I believe Harold
offered you one last time you posted about 100MHz xtals a couple years
ago. ECL won't have 2.5V output, but I could supply you with a nice
little PECL 100MHz VCXO that you could easily trim to "exactly"
100MHz. It will deliver about 800mV p-p into 50 ohms.

What is PECL?

Plessey emitter-coupled logic, like MECL, which is made by Motorola.

Leon

PECL is ECL run from a positive supply. ECL is normally run from a negative
supply respect to ground. So, they have the sme swings, but different "bias"
levels.

Jure Z.