[Elecraft] K3 + SDRPlay's RSP1 as panadaptor

[Bob McGraw K4TAX]

Yes and it gives you a much wider RF spectrum.  It is protected when you 
transmit thus no switching or muting is needed.  I've used it both ways  
and found with the IF output signal to the SDR that the sidebands were 
inverted.  Thus a LSB signal appears as above the carrier while a USB 
signal appears below the carrier. Also it makes for a nice 2nd receiver 
with good detected audio for most all modes.

There are many other software applications for the SDR receivers.   Most 
are FREE which is the better part while some get really sophisticated in 
their implementation and features.      As to how they interface with 
various logging applications, I don't have a clue.

Glad to be of assistance.

73

Bob, K4TAX


On 11/8/2018 2:44 PM, Doug wrote:
> Thanks for the idea. Works great and got me away from the problems 
> using the IF out.
>
> 73 Doug N3QW
>
>
> On 11/8/2018 10:53 AM, Bob McGraw K4TAX wrote:
>> I used HDSDR software and a BNC T  and a couple of short coax jumpers 
>> from the RX ANT output back into the RX input.   Activate the feature 
>> from the front panel of the K3S.    The input impedance of the RSP-1  
>> SDR is well above 50 ohms and thus I didn't observe any loading or 
>> loss of the received signal.
>>
>> As to software, HDSDR was my favorite and easy to setup and use. I 
>> added OmniRig to allow for full interface to the K3S.  This provides 
>> two way communications between the radio and computer. Thus any 
>> change on the radio is effected the same on the computer and any 
>> change on the computer is resolved on the radio.  Of course there is 
>> capability in the HDSDR software to have your choice of the radio 
>> following the computer or the computer following the radio or 
>> neither, thus both being independent.
>>
>> An excellent and economical approach which I used several years and 
>> with different radios as well.   That is......until I purchased a P3 
>> to go with my K3S.
>>
>> 73
>>
>> Bob, K4TAX
>>
>>
>> On 11/8/2018 9:19 AM, John Simmons wrote:
>>> Isaac,
>>>
>>> I did exactly that, using the HDSDR software. I used the RX ANT 
>>> output (must activate it from the front panel of the K3) to feed the 
>>> antenna of the RSP1. You use a BNC tee to feed the antenna back into 
>>> the K3. Purists use an RF splitter instead of a tee. I have a 
>>> YouTube video that shows the results: 
>>> https://www.youtube.com/watch?v=KusmkeLdfwE
>>>
>>> If you need further help, let me know.
>>>
>>> 73,
>>> -John NI0K
>>> TL_Netvision wrote on 11/8/2018 8:22 AM:
>>>> Hello all,
>>>>
>>>> I am considering using an RSP1 SDR with my K3. I will probably use 
>>>> HDSDR
>>>> software to start with.
>>>> Can someone point me in the right direction for the whole procedure?
>>>>
>>>> TIA
>>>> Isaac, 4Z1TL
>>>>
>>>>
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