N1MM does offer a Spectrum Display that can display a panoramic view some newer radio's support band data from the first broad m.f. like the IC7300
Radios that connect to the PC using USB or WAN can offer a data stream to N1MM Spectrum Display so older types need an other solution.
My K3 is connected with rs232 for CAT for low speed serial data like frequency mode
T/R CW keying
The Hackrf1 i recently got can be used if your K3 has the Xverter I/O option.
Hrf1 should already be working okay with SDR-console or SDR# before trying to connect with N1MM Spectrum Display
Download ExtIO_HackRF.DLL https://github.com/jocover/ExtIO_HackRF/releases
This ExtIO_HackRF.dll must be copied to the N1MM program directory.
C:\Program Files (x86)\N1MM Logger+
Connect the Hackrf1 with the IF out.
Hrf1 USB should be pluged in , no other SDR program must be running with it.
Start N1MM like used to then open window Spectrum Display
In my case the N1MM Spectrum display automatically found the ExtIO driver.
information:
https://n1mmwp.hamdocs.com/manual-windows/spectrum-display-window/
the left configuration window tab 3 the button in tab 3 opens a smal window where bandwidth and gain settings of the Hrf1 can be set
The Hackrf1 is receiving at the i.f port 8.215MHz
I reduced the Vga gain to 10dB and maximized the Lna to see more details in he spectrum
I found it not easy to see in the spectrum CW or LSB signals in this case on 40m since the default noise line is a bit high and hiding the wanted signals.
I have done the Elecaft K3 IF buffer mod for low serial K3 mine is serial 1404
replacing main PCB back R8 1k by 13k
Possible an other amplifying filter adaption is needed to gain a better dynamic range
The strongest signal 9+30 40 show no more then +20 dBm over the noise in the spectrum now.
Before i have used Hackrf1 with SDR# tuned at 8.214MHz then during the CQWPX phone i could see phone signals very good but then the frequency in the spectrum display does not correspond with the K3 tuning
The Hrf1 did receive well and also the audio was fine at the K3 i.f. out.
I was expecting similar result using N1MM Spectrum but it is not so good possible some setting is wrong? But have not found any setting to improve the spectrum view
anyway this is an easy way to have a band scope.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
the km DX should be just the other way calculated over the south-west not over North East
Morning path to ZL is over G CT to S-W so we have 19651+ km to ZL CT is closer..
Radios that connect to the PC using USB or WAN can offer a data stream to N1MM Spectrum Display so older types need an other solution.
My K3 is connected with rs232 for CAT for low speed serial data like frequency mode
T/R CW keying
The Hackrf1 i recently got can be used if your K3 has the Xverter I/O option.
Hrf1 should already be working okay with SDR-console or SDR# before trying to connect with N1MM Spectrum Display
Download ExtIO_HackRF.DLL https://github.com/jocover/ExtIO_HackRF/releases
This ExtIO_HackRF.dll must be copied to the N1MM program directory.
C:\Program Files (x86)\N1MM Logger+
Connect the Hackrf1 with the IF out.
Hrf1 USB should be pluged in , no other SDR program must be running with it.
Start N1MM like used to then open window Spectrum Display
In my case the N1MM Spectrum display automatically found the ExtIO driver.
information:
https://n1mmwp.hamdocs.com/manual-windows/spectrum-display-window/
the left configuration window tab 3 the button in tab 3 opens a smal window where bandwidth and gain settings of the Hrf1 can be set
The Hackrf1 is receiving at the i.f port 8.215MHz
I reduced the Vga gain to 10dB and maximized the Lna to see more details in he spectrum
I found it not easy to see in the spectrum CW or LSB signals in this case on 40m since the default noise line is a bit high and hiding the wanted signals.
I have done the Elecaft K3 IF buffer mod for low serial K3 mine is serial 1404
replacing main PCB back R8 1k by 13k
Possible an other amplifying filter adaption is needed to gain a better dynamic range
The strongest signal 9+30 40 show no more then +20 dBm over the noise in the spectrum now.
Before i have used Hackrf1 with SDR# tuned at 8.214MHz then during the CQWPX phone i could see phone signals very good but then the frequency in the spectrum display does not correspond with the K3 tuning
The Hrf1 did receive well and also the audio was fine at the K3 i.f. out.
I was expecting similar result using N1MM Spectrum but it is not so good possible some setting is wrong? But have not found any setting to improve the spectrum view
anyway this is an easy way to have a band scope.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
WSPR 80m
Still the distance calculation of WSPR spots in the morning grey line is wrong.the km DX should be just the other way calculated over the south-west not over North East
Morning path to ZL is over G CT to S-W so we have 19651+ km to ZL CT is closer..
| Timestamp | Call | MHz | SNR | Drift | Grid | Pwr | Reporter | RGrid | km | az |
|---|---|---|---|---|---|---|---|---|---|---|
| 2020-04-06 06:22 | CT1EYQ | 3.570173 | -23 | 0 | IM58ob | 5 | ZL2005SWL | RE68mx | 19651 | 205 |
| 2020-04-06 05:08 | DK2DB | 3.570041 | -25 | 0 | JN48fw | 5 | ZL2BCI | RE79nd | 18636 | 54 |
| 2020-04-06 05:16 | PA0O | 3.570028 | -24 | 0 | JO33hg | 5 | ZL2BCI | RE79nd | 18387 | 37 |
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