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Messages - DJ6KR

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1
Antennas / Re: Super Gain 9db 40m NVIS Antenna.
« on: March 23, 2017, 10:00:54 AM »
I just don't see how they can claim that much gain when the antenna is basically nothing more than a half wave folded dipole.  The idea behind a folded dipole is increased bandwidth, not more gain ?

It is all about the reflector on the ground under the Antenna, I think.


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2
Net Activity / Re: Preppers Calling Frequency.
« on: February 21, 2017, 08:35:47 AM »
As said before, I am in. I will give it a try on my next /p trip with PSK31 and maybe SSB Voice. 7110 kHz is the center of IARU Region 1 Emergency Comms, and 7090 kHz is the QRP Center, so we would be in a great neighborhood :) All modes are ok there and most Radio can go up to that point. So from my point of view: It's a yes!

73
DJ6KR



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3
Net Activity / Re: Preppers Calling Frequency.
« on: February 19, 2017, 04:26:56 PM »
In the end we can't trick physics, so if we want to talk, we will have to adjust the frequencies to the required distances. Even having one Freq. per band, would already make encounters petty likely. Now imagine doing the planning via WinLink before and everyone ist in the "net" :)


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4
Net Activity / Re: Preppers Calling Frequency.
« on: February 16, 2017, 05:49:09 AM »
Hey Gil,

Thanks for the welcome :)

Yes of course there are many A-Level Hams on the 40m Band in Germany. And as I said I like the Idea of using this as "our" main Band. But to be really reliable one would whish to be able to change the band with changing F_opt or changing MUF respectively.

I did not link my blog, as I don't want to look like I am only here to promote myself and a lot of it is in German... anyways, thanks a lot for posting it :)

I personally use a buddipole / EndFed Verticals / LHKA Antennas / Randomwires etc. and eventhough they do get huge on 80m, I did always manage du work propperly /p!!

Anyways, IF my wife and or my PhD Thesis allow me to, I will collect information on how to make directed and planned HF-Comms possible, favoravly with QRP & /p stations.

Definite yes for the sked Video :)

This would add in great to my planned article on planned HF-comms.

73
Konrad
DJ6KR


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5
Net Activity / Re: Preppers Calling Frequency.
« on: February 16, 2017, 04:37:36 AM »
Hi Gil,

Nice idea. Btw I am that guy from youtube that proposed a sked ;)

I love the idea, the only downside, E-Level Hams from Germany are not allowed to access the 40m Band, so we might consider another Frequency on the 80m Band. I personally would suggest even three in 80, 60 and 40 plus a priority for 40 for example. I know this way things get more complicated, but in order to be flexible enough a set of Band might be cool.

Anyways, I am in and will promote any descision we make on my Blog.

73
DJ6KR


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6
General Discussion / Re: Ham Radio ABC's for Preppers
« on: February 16, 2017, 01:23:11 AM »
Hi There,

Amongst all the other points already mentioned, that I believe are great, I would like to toss in: Reliable and Planned Comms!
A lot of people, including myself, have thought about Ham Radio as kind of a random way to communicate, especially on HF. You set everything up and then you call "CQ" and see what comes your way. But of course there is far more. As this was THE way to communicate for quite some time in history, there is a load of knowledge on "How can I reach Bob in NewZealand, Greg in Moskow, my friend only 100km away and later that emergency station in France" When I got into NVIS, it struck me, how directed and planned a shortwave connection can be, if you are capable of changing things about your antenna and changing bands. In real SHTF I personally have a few people inside Germany that I want to get connected with, plus some in France, Italy, and so on, so I need to make sure I can reach all those distances. In my CB-Radio time, everybody claimed that anything further away than line of sight, was just voodoo magic you can't plan, but that's wrong. Some time ago, STN (SurvivalTechNord) and I decided to go for it and make a planned Finnland - Germany connection via PSK31. It worked like a charm, except for those contesters that made more than a callsign + rst exchange impossible .... grmbl grmbl :/

Anyways this is my personal insight as this was what fascinated me most about SHTF-Ham-Radio lately.

73
DJ6KR

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