Curt wrote:
I thought the K1 was the commercial version of the Sierra.
The...er...Sierra is the commercial version of the Sierra. :-)
It's still sold by Wilderness Radio.
The Sierra is rather different from the K1. Not least difference
being the four PIC controllers found in the
Maybe not.
The Sierra has been shown on the Wilderness Radio website as out of stock for
quite a while now.
Too bad. It was a very versatile kit.
73,
Rick Dettinger K7MW
On Oct 19, 2014, at 11:02 AM, Mike Morrow wrote:
The...er...Sierra is the commercial version of the Sierra. :-)
I thought the K1 was the commercial version of the Sierra. Didn't the
Sierra predate Elecraft?
BTW, the K1 is about the neatest QRP radio I own, even above my K2. I've
built boards for every band 80M-10M, especially enjoy working from the patio
@ 1W into an EFHW on 20M. It's my go to rig
Hi.
I have noticed that the K1 and Sierra rcvrs are very similar (as 602 based
designs). The main difference is imo that the Sierra has a MC1350 IF amp
(as has the K2 btw) followed by an LM386, but the K1 seems to do all
amplification after XFIL on AF frequencies using LM386+LM380.
Could/have
Since you consider yourself as an RF tinkerer, it sounds like an interesting
experiment. Since the technology in the K1 predates my interest in Elecraft,
probably the up to date inclusions in the Sierra were not available when the K1
was designed 20 years or so ago. The K3 design is not
... probably the up to date inclusions in the Sierra were not available
when the K1 was designed 20 years or so ago...
The Sierra predates the K1. The NE602 mixer and MC1350 IF amp was in common
use long before the Sierra was designed and even longer before Elecraft was
formed. Elecraft used
...were not available when the K1 was designed 20 years or so ago.
That's a pretty fanciful date to just pick out of thin air! :-)
There wasn't anything that was Elecraft 20 years ago. The K1 was shown
first at Dayton 2000, after which many of us ordered one. The first
deliveries to the mass
More history - Elecraft was formally created July of 1998. (We began working on
the K2 design well before that.)
We shipped the first 100 K2 Field Test Units January and Feb. of 1999. We took
orders for production K2 kits at Dayton in May of 1999.
We followed that with the K1, then the KX1,
Well ... Thanks for the history. One can also look at Elecraft's website
http://www.elecraft.com/about_elecraft.htm
But my question remains: Why did the (very early) Sierra and the (first
Elecraft product) K2 have IF amp (MC1350 - and of course the standard AF
amp LM386), but the K1 was
Roy,
I think one of the reasons for the change from the MC1350 to the NE612
followed by the LM386 was due to the fact that when the K1 was designed,
the MC1350 in its DIP format was not to be used for current designs.
Yes, the MC1350 is still available in SMD format, and Elecraft has
Yep - the K2 uses LM380, but the Sierra uses only an LM386 as headphone
amp. My ill formulated sentence. But it doesn't matter - its all AF dBs.
My point is that the Sierra and the K2 uses an IF amp MC1350 before the
product detector 602 (612, NE, SA ...), and gets a 'proper' AGC. The K2 is
of
Hmm .. so where is the KX2, Eric? :-)
73, Phil W7OX
On 10/17/14, 6:34 PM, Eric Swartz - WA6HHQ,
Elecraft wrote:
More history - Elecraft was formally created
July of 1998. (We began working on the K2 design
well before that.)
We shipped the first 100 K2 Field Test Units
January and Feb. of
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