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Recent Posts

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91
Antennas / Re: Linked Dipole
« Last post by CPR on June 20, 2018, 02:33:54 PM »
I still need a wolphilink for my 817, but yes, thats a good idea for a comparison!

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92
Antennas / Re: Linked Dipole
« Last post by vwflyer on June 20, 2018, 01:04:10 PM »
Sotabeams makes some good stuff. That looks like a nice balun. If you can set up a wispr beacon it might be a good way of doing direct comparisons of the antennas.
93
Antennas / Linked Dipole
« Last post by CPR on June 20, 2018, 08:29:30 AM »
For quite a time I was interested in building a resonant multiband dipole or linked dipole.
I see a lot of benefits in it, especially no tuner is needed therefore no loss for qrp. Although you have to carry a bit more of equipment, the linked dipole should perform the best regarding noise and stuff - so they say.

Anyway, I got myself the dipole center with a 1:1 balun kit from sota beams.
I found a great tutorial on how to trim the wire :

http://amateurham.co/4-band-linked-dipole-how-to/

So in the following days I intend to build the linked dipole and will keep you updated.
I'm quite curious about the performance compared to the random wire end fed antenna. I intend to use this linked dipole with my 6 meter telescope pole.



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94
New To Radio / Re: New to HAM Community What is a good beginner rig?
« Last post by CPR on June 20, 2018, 03:40:42 AM »
Quote
I seriously doubt I will be running around performing comms ops like some guys plan.  More than likely it will be if and when its time to move to a new location.

Running high power rigs in the air in SHTF is like drawing a target on your back. Also you need to change locations often or your shack will become a target.
In the civil war in Yugoslawia, HAM operators had an important role in relaying information to the army as the Croatian army and informational infrastructure was not present / cut off. Resulting in pinpointed attacks from the aggressor on villages with active ham operators. Just sayin. If they saw an antenna on your roof, your house was gone.
95
New To Radio / Re: New to HAM Community What is a good beginner rig?
« Last post by vwflyer on June 20, 2018, 12:19:01 AM »
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This thread got me thinking though, when was the last time I even heard a QRP station?
Do you do much CW? Im in the El Paso area and I have regular QSOs with QRPers on CW. Id estimate that - ⅓ of my CW QSOs are with someone running QRP.
96
New To Radio / Re: New to HAM Community What is a good beginner rig?
« Last post by LWolken on June 19, 2018, 11:00:34 PM »
Personally I would love to see a 30-50 watt variant of the FT-857d.  If I can't make it with 50 watts its probably not happening.  On the contrary there have been numerous occasions where 5-10 watts would not make the trip but 20-30 worked just fine.  The 817 is a fine rig and I'm sure I will get one eventually but just not in the doldrums of this solar cycle.

As you can see with Julian's videos there are many great power options for QRO rigs in the field.  A 7-10Ah LiFePO4 battery and 30-50 watts of solar is more than enough.  I used this combination on Dry Tortugas Island for 4 days.  That's what I'll be running on field day.  Most shtf situations I can dream of are going to be more listening than anything else, maybe a quick wellness check to family.  I seriously doubt I will be running around performing comms ops like some guys plan.  More than likely it will be if and when its time to move to a new location.

This thread got me thinking though, when was the last time I even heard a QRP station?  Maybe its just my area?  Here in Texas, we're about 800 miles wide and tall which is about 1200km both ways.  European DX contacts are still regional where I live.  Its all about perspective I guess...
97
New To Radio / Re: New to HAM Community What is a good beginner rig?
« Last post by CPR on June 19, 2018, 04:08:46 PM »
I value cw as it is but have no intention to learn it for now as I see no need.

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98
New To Radio / Re: New to HAM Community What is a good beginner rig?
« Last post by vwflyer on June 19, 2018, 01:41:17 PM »
Quote
But not everybody can afford (learn) it. Although CW seems like a really useful thing to know, I personally prefer talking SSB.

You can afford what you value.
99
New To Radio / Re: New to HAM Community What is a good beginner rig?
« Last post by gil on June 19, 2018, 05:05:49 AM »
The 817 is at the limit. I like it, it's an excellent radio. Actually, if I had 600 Euros now I would probably buy one... Especially that it has 2m and 70cm SSB. Make a portable 2m Yagi like I did and you'll have a lot of fun!

https://www.youtube.com/watch?v=6quIk_X3QIE

Gil.
100
New To Radio / Re: New to HAM Community What is a good beginner rig?
« Last post by CPR on June 19, 2018, 04:31:18 AM »
Yes, CW is the top of the energy efficiency.. It's like a VW BlueMotion or a state of the art hybrid car. But not everybody can afford (learn) it. Although CW seems like a really useful thing to know, I personally prefer talking SSB.
I can charge my 18650 via USB and my Anker solar panel. It can deliver 2A tops, enough to charge my batteries to stay online. I have my diy 3s2p 6Ah 18650 pack. I can take out 3 and run 3Ah while the others charge. With my 817 I can stay online quite a time with 3Ah. Although I would not waste energy too much, rather stick to the 3-3-3 rule for SHTF.
I built in a BMS to that pack, I could even charge them with solar. But this panel delivers 5V, converting it to 12V won't do the trick as the Amps will drown.
Maybe, I'll get a decent 12V panel someday, but I don't see the need right now, not when I don't have a current-hungry amp.

If you buy your rig primarily for fun, then go with 100W, if you buy it from the prepper side of view, I'd suggest for QRP rigs. There is no need to get through a pile up when SHTF  ;D
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