Re: K3 ANT to IF OUT Conversion Gain
Charlie T, k3ICH
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I simply wanted to use the SDR-IQ as a stand-alone receiver, not as a panadapter for another radio.
I was hoping there was something different(better) than SpectraVue.
Since I sold the P3 set-up, I connect the K3S’ IF out to the RX input of an IC-7610 for a panadapter display.
Works like a charm for me.
Thanks for the info, Charlie k3ICH
From: Elecraft-K3@groups.io <Elecraft-K3@groups.io> On Behalf Of Wes Stewart via groups.io
Sent: Tuesday, October 13, 2020 10:15 AM
Subject: Re: [Elecraft-K3] K3 ANT to IF OUT Conversion Gain
Several different SDR programs will control the SDR-IQ, but why? I find most of them ghastly, with bells and whistles thrown in just because they can.
If your application is a bandscope, looking at a swath of spectrum around the tuned frequency and running off the K3 I-F then there should be no fuss. The SDR follows the radio, and if you don't point-n-click or tune with the mouse wheel, you never have to touch the SpectraVue program again after setup.
On Tuesday, October 13, 2020, 4:05:55 AM MST, Charlie T, k3ICH <pincon@...> wrote:
Is there any software out there other than SpectraVue usable for control of the SDR-IQ receiver?
I find the whole tuning function/changing frequency, to be rather tedious.
The combination works fine but so far, it’s a royal PITA to use.
Very likely I’m missing something, but there’s got to be something easier to just tune around, changing bands etc.
Since this is a far OT thread, I would request any response be direct to me at pincon at erols dot com
73, Charlie k3ICH
I would call that a second receiver, not a panadapter/bandscope. I use an SDR-IQ with SpectraVue software for my bandscope.
SpectraVue knows all about the K3/K3S i-f output frequencies v. mode and BW so it displays the tuned frequency in the middle of the screen regardless of those adjustments (if desired, which I do). It offers point-n-click or mouse wheel tuning. There is no display smearing, refresh is instantaneous. No fuss, no muss.
On Monday, October 12, 2020, 5:34:48 PM MST, Bob Wilson, N6TV <n6tv@...> wrote:
On Mon, Oct 12, 2020 at 4:11 PM Robert <rdiamant36@...> wrote:
I've been using a Perseus SDR as a transceiver panadapter for about 12 years now. I highly recommend ignoring K3 IF OUT; use K3 RX ANT OUT instead. This works with many radios, not just the K3.
See my presentation linked from my QRZ.COM page, or the direct link below:
The technique is the same for an SO1R station: just split RX ANT OUT to (1) RX ANT IN and (2) Perseus ANT IN using a 50 ohm "Magic T" splitter (or a 75 ohm TV splitter). A BNC "T" connector is not recommended since it doesn't isolate the two outputs.
There are many advantages to doing it this way:
Note: you must activate RX ANT on the K3, on every band, otherwise the Perseus receives no signal on that band.