7QNL QRX and some tech talk

Today we depart to Salima (next to the lake) and hope to return June 7th around 1300 UTC. I.e. until this estimated time of arrival at the 7QNL QTH there will be no operation.
Yesterday propagation was good. Surprisingly I made quite a few contacts on 12m, even
working Joe 7Q7BP!
RTTY, as already mentioned, works very well and at least Malawi disappears from the 100% needed list on ClubLog concerning 12m RTTY ;- )

I had some requests for 10, 15, and 40m.. The first week (and CQ WPX contest) I was active on these bands. However, last week I replaced the antennas for WARC ones (12, 17 & 30m). I kept 20m alive. Please try to work Ken 7Q7GIA on 10, 15, and 40m instead.

Despite lack of output power (my strategy was to make it for YOU are easy as possible to work Malawi, i.e. producing a good signal abroad) due to the collapse of my SSPA power supply, the pile ups keep coming and coming. On 30m I worked a disproportional amount of JA’s, and … they keep coming ; -)
Output power on 30m is around 65W, but..  I miss the PA ;- )

Below the calculated radiation patterns of the 30m VDA above average ground (0.005/13):
30m-vda30m-vda2
Radiation pattern of the 30m VDA (left 2D, right 3D, click on images to enlarge in a new tab).

Although asking for ‘NA’ sometimes, the amount of responses and signal strengths are low. This morning (June 5th) I worked quite a few NA stations on 30m though.

Although having brought the last MASTER.DTA, my log is full of calls not in ‘the database’. Therefore I have to rely on what I hear in the air, and may sometimes ask for a confirmation in case of weak or QRM’d signals.

Because the pile ups are huge, and I QSX after almost every QSO, most of the times I get portions of the calls. Instead of waiting for another call of the specific caller, I transmit these partials. This is a deliberate strategy to let the crowd know I’m alive and to work
everyone as fast as possible. It takes less time to TX a partial (with one extra over, yes…)
then waiting for the same station to call again, is my experience in ‘the beehive’ (also
during contests btw).

Internet remains unpredictable and slow, but we do the best we can to update everything.
Every day I try to upload the last masterlog to Alex, which he publishes on this site/ClubLog.

To have an idea what kind of internet we have, see picture below (with the RTT’s, when present ;- ) (click to enlarge in a new tab):
ping

When returning Saturday I have one afternoon, evening and morning to operate, because Sunday we have to dismount the antennas. Monday morning is our departure.

Thus .. one more day 7QNL to come on 12, 17, 20 , and 30m!

73, Remco 7QNL / PA3FYM

 

 

 

One thought on “7QNL QRX and some tech talk

  1. Hi Remco and Saskia!

    Nice to notice you still work pile-ups despite of the PS broke down. This proves your TX-antenna’s works very well!
    If you find time to debug the PSU, and don’t want to spend more fuses, here is a tip:
    Put a 500w light bulb, or toaster, or heater in series with the primary side of the PSU. No fuses blown, and you are able to take measurements in the PSU.

    With regards!

    Richard, pa7fa

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