[Elecraft] IF OUT - Same as just sharing the antenna?

[Alan Alan]

The K3's IF OUT bandwidth is limited only by the front-end RF filters so 
it covers an entire amateur band, plus.  That is handy for a panadapter 
because it is always centered on the VFO A frequency.  The IF center 
frequency is 8.215 MHz.

Alan N1AL


On 3/9/2024 11:04 PM, Fred Jensen wrote:
> It's around 8.15 MHz. It's ahead of the ADC and 15 kHz 2nd IF, the RF 
> is over 200 kHz wide and is nominally there for connection to a P3.
>
> 73,
>
> Fred ["Skip"] K6DGW
> Sparks NV DM09dn
> Washoe County
>
> Ed Parish wrote on 3/9/2024 12:57 PM:
>> IF means Intermediate Frequency.  It is the result of mixing the RF 
>> with a
>> local oscillator,  LO. So, no, it isn't sharing an antenna.
>>
>> On Sat, Mar 9, 2024, 15:39 JHR<jrichards at k8jhr.com> wrote:
>>
>>> Please help me understand how the IF OUT works on an Elecraft 
>>> radio.  Is
>>> it the same thing as sharing the antenna with a T/R switch, or does it
>>> tap the RF processing chain later down the line. Does the IF OUT merely
>>> share the antenna, or does it come later in the circuit - are there any
>>> practical reasons why one is better than the other?  I presume the IF
>>> OUT is better, but wonder why.
>>>
>>> [It matters and will settle a bet who eats steak and who eats hot dog.]
>>>
>>> Thanks in advance K8JHR
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