[Elecraft] preamp for using an SDR as a pan adapter

[Don Wilhelm]

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 <wes_n7ws at triconet.org> 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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