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 31 
 on: Yesterday at 06:04:11 PM 
Started by VA3PSE - Last post by N4JTE
I see all the charts etc, but impossible to really plug in actual ground conditions/ near path/ long path.
A monoband vertical in your backyard will be at it's best efficiency when at, or around, 28 ohms. Easily matched with paired 75 ohm 1/4wl feeders or a tuner, no big deal.
And if my only reference during construction was the swr meter, I would be happy with something around 2 to 1, as would any experienced mono vertical builder.
The addition of more radials is easily the fastest way to get to that point while leaving the1/4wl element untouched.
Bob

 32 
 on: Yesterday at 06:02:03 PM 
Started by VK2FAK - Last post by VK2FAK
Hi all...

Its not quite fair...hi

You guys in up North have more land to keep an eye on the balloons, down Southern Hemisphere  its mainly all water, so long waits to see if it goes anywhere...

John

 33 
 on: Yesterday at 05:51:30 PM 
Started by KF7VXA - Last post by VA2PBJ
... and ask him what on earth he is talking about.Smiley ...

Buz Lightyear (Disney) : "To infinity and beyond!"

Real hard to research...

 34 
 on: Yesterday at 05:46:45 PM 
Started by KD8MJR - Last post by KD8MJR
I saw this on eBay.
I cannot see any down sides to it!  It's cheap, it's a kit and it will give Zenki a heart attack Wink

http://www.ebay.co.uk/itm/KIT-HF-power-amplifier-Solid-State-DN-600-600W-4x-MRF150-/321449048042?pt=US_Ham_Radio_Amplifiers&hash=item4ad7db37ea#ht_3175wt_1206

More Info
http://www.qsl.net/ut2fw/dn600.htm

Just Kidding Zenki  Grin
Yes folks it's most likely a POS.

Rob

 35 
 on: Yesterday at 05:46:23 PM 
Started by N6PSE - Last post by NU1O
I spotted myself today on 12 meters and I worked a new state as a result.  12 meters is lightly used so I don't think a self spot is going to cause people to go ballistic.

73,

Chris  NU1O

 36 
 on: Yesterday at 05:44:21 PM 
Started by VK2FAK - Last post by KG7CSS
Just an update MOXER-4 Is in the US it will pass north of Olympia Washington
http://aprs.fi/#!mt=roadmap&z=10&call=a%2FM0XER-4&timerange=3600&tail=3600

 37 
 on: Yesterday at 05:42:17 PM 
Started by DL3OCH - Last post by AA7LV
 
Grin 3 Wire Terminated Folded Dipole  Grin


 3 wire folded dipole

Can be installed as "Inverted Vee"
 
AT LEAST 1/2 Wave or more at Lowest Operating Frequency

160 Meters about 260 feet long (160/80/60/40)
 80 Meters about  130 feet long (80/60/40/30/20)
 40 Meters about    65 feet long (40/30/20/17/15)

Fed on outside wires at the center with 1 foot jumpers from 9:1 Balun

Termination Resistor in middle of center wire 900 ohms 300 watts for 1 Killowatt Transmit Power on SSB

Wire Spacing 1 Foot

 Wink "NOTES ON WIDE BAND MULTIWIRE "FOLDED DIPOLES" Wink

L.B.Cebik

W4RNL (SK)


http://www.cebik.com/

http://w4rnl.net46.net/wbmw2.html


E-Ham
Reviews Summary for Array Solutions AS-BB-Series BroadBand Wire Antennas
http://www.eham.net/reviews/detail/7338

 38 
 on: Yesterday at 05:39:03 PM 
Started by AA3M - Last post by AA3M
Photos............

http://www.mattesini.com/yaesu/FP-29_fan/fp29fanmod.html

 39 
 on: Yesterday at 05:24:24 PM 
Started by W4TL - Last post by W5YZ
It wouldn't do much good to ID the guy.  Too bad he started getting personal.  It's one thing to knock an organization, another to get personal.  Sounds like thinking the organization is more important than the people who they are supposed to be serving.  So far this week, four houses on the block have been retrofitted with the "HAM" AFCIs.  Ten more to go.  BTW, I looked at the box the HAM AFCIs come in and there is no difference in them and the old AFCIs.  Lots of room for mistakes.

 40 
 on: Yesterday at 05:18:09 PM 
Started by KK7KZ - Last post by KK7KZ
Bad FM Master Oscillator crystal - off freq just enough to not make it through the tuned buffer amps.

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