In a word, YES. I find that to be true with my K3S as well as other
brands/models of radios. Thus you'll need about 20 dB of gain in the
form of a preamp between the IF output and the QSR receiver.
73
Bob, K4TAX
On 10/4/2019 12:57 PM, Fred Massey wrote:
Some. I was planning on sending an email to Elecraft support with the s/n
of my K3s to see if I needed the mod. The difference I’m seeing in signal
strength is about 20+ dB. Is it normal for the if-out to be weaker than a
direct connection to the antenna?
73,
Fred
AE4ED
On Fri, Oct 4, 2019 at 12:44 PM Don Wilhelm <[email protected]> wrote:
Fred,
Have you looked the K3 IF Output mod?
https://ftp.elecraft.com/K3/Mod%20Notes%20Alerts/IF_Output_Buffer_Gain_Mod_Rev_A.pdf
If you don't have the 13k SMD resistor or a 1/8 watt 13k resistor, you
can order the kit from Elecraft.
73,
Don W3FPR
On 10/4/2019 1:24 PM, Fred Massey wrote:
Good afternoon Wes and all,
If I connect the antenna directly to the QSR-1, I get the same signal
level
as the K3s. But, when I connect to the QSR-1 to the IF-out, the signal
is
about 4 s-units less.
Any ideas...anyone?
Fred
On Thu, Oct 3, 2019 at 4:14 PM Wes <[email protected]> wrote:
I use an SDR-IQ on the i-f output on my (very) early K3S. it works
fine.
IIRC,
always a dubious proposition, I did the mod on my original K3 and it
worked well
too without any additional amplification. I think you have another
problem.
Wes N7WS
On 10/3/2019 2:01 PM, Fred Massey wrote:
Good afternoon,
I have successfully connected my QSR-1 to my K3s if-out, and
immediately
noticed the signal strengths showing on the QSR-1 were much weaker. I
probably have an early K3s, so the if-out signal strength is even
weaker.
Any recommendations at a good preamp to use? It seems like 20db is
what
I
need:
73,
Fred
AE4ED
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