Sunday, March 15, 2015

Using the Anglian 4m Transverter with ANAN-10 and N1MM logger+

This morning I decided using the K3 with the new Anglian 4m xverter for the 70MHz contest would be too easy, so I decided to try hooking it up to the ANAN-10 and trying to use it with the N1MM Logger+ software.

Its easier to use the TX port output with a 20db attenuator than the xverter port output. If you do use the XVERTER output, the TX port has to be terminated, as it still produces 0.5W output and Powersdr will complain of SWR alarms. As previously determined, a 30MHz LPF is always needed on the output.  I used the EOT output pin 25 of J16 to key the transverter. The Mic input had previously been wired for the KX3 PTT microphone

Powersdr makes the ANAN-10 look like a TS2000 to the N1MM software so N1MM could track the frequency through a com0com virtual serial connector.  I used a COM4<>COM5 pair.

Tuning Powersdr through the beacons was a challenge, so, having remembered I had a Griffin powermate USB knob I Installed that on the windows 7 64 bit machine (the driver/software on the griffin site for Vista worked fine). I configured it to tune the rig up and down. This worked fine BUT ONLY if Powersdr had focus. When N1MM had focus the tuning knob did very strange things to the frequency.  This was overcome by deleting the default setting entries in the Griffin setup software. I then discovered (after reading the N1MM documentation) it was possible to tune the radio (only in run mode) from the keyboard. This scheme worked well.

The transverter produced 7W into my loop antenna in the loft. A few QSOS were made on SSB with locals then my thoughts turned to CW. Initially I used the Powersdr CW keying facility as I failed setting up the N1MM keyer to send cw through the CAT connection. Unfortunately the paddle connections were swapped over so G4BRK got to suffer my cw with the paddle operated upside down ( you can swap the paddles over in Powersdr I later found out, but its in the <DSP><CW> tab!) I then worked G4BWP (my best dx) then G4RFR on CW.

After the contest I went back to looking at the N1MM keying. I discovered, (also in the <DSP><CW> tab) that, whilst leaving the primary cw connection as "radio", (ie its key jack) a secondary connection may be set as a com port (COM6 in my case) and the RTS and DTR set to convey the cw and PTT signals from N1MM. Another com0com virtual port pair was set up (COM6<>COM7). In N1MM in the <configurer><hardware> Tab,  COM6 was set up as a "CW/other" connection with RTS and DTR appropriately assigned. This then worked fine

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