On 2020-05-12 2:46 PM, Jim Brown wrote:
>
> My first recommendation would be a used K3/100 if you don't need the
> compactness of the KX3, but study the options that are installed. Some
> options are no longer available from Elecraft.
My recommendation would be the K3/K3S *unless* you *never* planned to
operate at more than 10W. The KX2/KX3 with KPA100 has significantly
more phase noise than the K3/K3S at 100W and when run through another
external amplifier (KPA500/KPA1500/etc.).
The KX3 has transmitted phase noise at (approximately) -122 dBc (@ 10
KHz) where the K3/K3S is (approximately) -135dBc (@ 10 KHz). This
data is from the ARRL Labs as reported in the reviews of the specific
rigs.
Bottom line, the KX3/KPA100 (at 100 W) will have as much transmitted
phase noise as the K3S/KPA1500 (at the legal limit)!
73,
... Joe, W4TV
On 2020-05-12 2:46 PM, Jim Brown wrote:
On 5/12/2020 8:11 AM, Buck wrote:
A used K3 would be my recommendation if you don't need portability.
The K3 is still one of the finest radios ever made
I agree. The KX3 is a fine radio, but the K3 is much easier to use if
you want to do modes other than CW and SSB. In today's world, digital
modes have become quite popular, in large part because they make it
possible to work through the greatly increased noise levels present
where most of us live.
and can run the full 100
watts
The base K3 is a 15W radio. The 100W amp in a K3/100 is an option.
when QRP just won't cut it.
I work a lot of QRP, but I also work a lot at 1.5 kW.
My first recommendation would be a used K3/100 if you don't need the
compactness of the KX3, but study the options that are installed. Some
options are no longer available from Elecraft. Get advice from a K3
owner if you don't understand the details.
73, Jim K9YC
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