> Could you elaborate on "dynamic range" in crystal filters?
All crystals have imperfections (flaws). Those flaws create distortion
when the crystal is driven with a high level signal and the distortion
(non-linear response) results in intermodulation distortion (IMD).
The K3/K3S operates the crystal filter at a higher level than many other
receivers. Thus, testing the filters for linearity at the maximum
signal level (equivalent to S9 +40 dB - where the hardware AGC engages)
is important to assure the best possible performance over the entire
operating range of the K3/K3S.
73,
... Joe, W4TV
On 6/22/2017 3:12 PM, Bob wrote:
Hi Wayne,
Could you elaborate on "dynamic range" in crystal filters? A
quick search did not yield a definition. A SWAG might be another term
for ultimate rejection or it with ripple in the passband...
Just curious.
73,
Bob
K2TK ex KN2TKR (1956) & K2TKR
On 6/22/2017 12:54 PM, Wayne Burdick wrote:
Yes. We screen every INRAD filter. Those that don’t meet our dynamic
range targets are rejected.
Wayne
N6KR
On Jun 22, 2017, at 9:46 AM, Vic Rosenthal <[email protected]> wrote:
I recall Wayne saying that Elecraft tested filters received from
INRAD for some specific performance characteristics. I don't remember
the details.
Vic 4X6GP
On 22 Jun 2017, at 17:14, Clay Autery <[email protected]> wrote:
INRAD makes Elecraft's filters as I understand it...
I'll be getting mine from Elecraft directly.
______________________
Clay Autery, KY5G
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