Main Filter attenuating signals on 20M and up

VK3ICM
Posts: 46
Joined: Tue Nov 12, 2019 1:44 pm

Main Filter attenuating signals on 20M and up

Postby VK3ICM » Wed Apr 08, 2020 1:38 pm

Hi -

I've had a 7000DLE MkII for two days now, so I'll preface this by saying it's probably something obvious. I'm running Protocol 2 (v. 2.0 firmware) and Thetis works great.

I'm seeing something in SDR Console (3.0.20) I can't explain. Could anyone verify this on their setup?

On 20M and up, if I turn 'Main Filter' on, it attenuates a test signal anywhere from 10-20db. On 40M and below it does not. It seems like the wrong filter is being switched in - I've not been able to replicate this in Thetis.

Cheers - Chris
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Simon
Posts: 40
Joined: Sun Apr 09, 2017 5:19 pm
Location: Mawnan Smith
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Re: Main Filter attenuating signals on 20M and up

Postby Simon » Wed Apr 08, 2020 4:47 pm

Hi Chris,

Must be a bug - notes, with luck I'll look at this next week. Best place for support is https://www.sdr-radio.com/support as that's monitored all the time (well, inbetween beers).
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PD3LK
Posts: 194
Joined: Mon Nov 11, 2019 8:45 pm
Location: Apeldoorn, NLD

Re: Main Filter attenuating signals on 20M and up

Postby PD3LK » Sun Apr 12, 2020 11:02 am

Hi Cris, i can't reproduce this on 20m with my 7k. (RX and also protocol 2 v. 2.0)

Where's the test signal coming from, another TX nearby or a LOW power hf generator?
Do you see the attenuation also without that test signal ...10-20db noise drop?
73 PD3LK Leon

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