Emcomm Antenna - EmergencyCommunications Forum at eHam.net

$\'\'$

$\'\'$

$\'\'$

eHam.net Forum : EmergencyCommunications : Emcomm Antenna

Forum Help

1-10 of 10 messages

Page 1 of 1

Emcomm Antenna	Reply
by KA4KOE on September 9, 2008	Mail this to a friend!
My preference has always been to feed a dipole with twin lead and then route that to a tuner, preferably a manual type. I've seen electronic ones fry. My opinion is the simpler the better. My current EMCOMM antenna uses a PRC74 dogbone center insulator, obtained from Fair Radio. These are quite nice, actually, and easy to modify. For conductors I use the WD-1/TT two conductor heavy duty telephone wiring. This stuff is extremely strong, steel reinforced, two conductors. I solder the ends together so we have one big conductor. Each half of the dipole attaches to the dogbone. If you look you find a mile of this incredible wire for under a 100 bux. I then attached a Budwig SO239 center insulator to the dogbone and made up the necessary connections. I then soldered a PL259 to the end of a hunk of Wire Man 450 ohm twinlead. The voids are filled up with RTV. Sure its an impedance bump, but below 30 MHz, probably no difference is noticeable. The twinlead is attached to the dogbone in this manner. I used this configuration with my PRC1099 at 20W for field day and it worked well. Does my impedance bump really matter all that much? I need to post pix somewhere. Philip KA4KOE

RE: Emcomm Antenna	Reply
by KE4SKY on September 10, 2008	Mail this to a friend!
Sounds like a good 31C solution. You keep your stripes!

RE: Emcomm Antenna	Reply
by WB6BYU on September 10, 2008	Mail this to a friend!
Since you are using a tuner with it anyway, the impedance bump makes no difference. Your tuner will match whatever impedance it sees at the end of the feedline.

RE: Emcomm Antenna	Reply
by W3TDH on September 24, 2008	Mail this to a friend!
I would love to see that picture! -- Tom Horne, W3TDH

RE: Emcomm Antenna	Reply
by KF5AMX on May 6, 2009	Mail this to a friend!
http://ee-3.com This is the perfect EMCOMM Antenna out there. Cheap, light, extremely small, and performance comparable to a JPole. I have been throughly shocked by the performance of this antenna. I can now hit repeaters 30 miles away with my 5 watt HT. I can even hit local antennas with .05Watts now. Thats right. .05 Watts from a handheld. And I even got the economy model version. Adrian

RE: Emcomm Antenna	Reply
by KA4KOE on September 14, 2009	Mail this to a friend!
Nope. I think my rig will blow yours out of the water any day of the week, 24/7/365. Take your ad somewhere else.

RE: Emcomm Antenna	Reply
by W3JKS on September 16, 2009	Mail this to a friend!
For a -1099, the bump shouldn't matter much. Your antenna sounds like one right out of the USMC Antenna Handbook, in fact. I would love that wire more if I didn't puncture my finger every time I stripped it and tried to stick the end into the binding posts on my TA-1042. That steel wire would bite me about once or twice a day. Ouch. Always kept a few alcohol wipes and a roll of tape in my BDU pockets anyway - Scotch 88 Tape for splicing and bandaging fingers and wipes for cleaning fingers and PC board contacts. :-) And I've found that a small bottle of "liquid tape" was handy for render-safing the ends of antenna wires. 73s, john W3JKS/AAT3BF/AAM3EDE/AAA9SL “Old RADEF Officers never die, they simply decay exponentially…”

RE: Emcomm Antenna	Reply
by ALCO141 on September 21, 2009	Mail this to a friend!
how long are the wire limbs on the dipole? how long is the ladder line? alex

RE: Emcomm Antenna	Reply
by W3GJD on October 13, 2009	Mail this to a friend!
80M-6M 1500W 25' end feed. WWW.EFABANTENNA.COM Light weight, easy put up/take down. Mount vertical, horizontal or sloped fashion. No radials. Most hams in emcomm work do not run more that a few hundred watts but, for field day, restrictive areas and other uses, you can run the power.

RE: Emcomm Antenna	Reply
by N4CDB on October 31, 2009	Mail this to a friend!
I have to agree 100% with KF5AMX for V/U regardless of the OPs rather rude response. If you're talking about the higher bands the EE-3 is hard to beat.

Page 1 of 1

Next Topic: Tuning up on HF ECOM freqs?
Previous Topic: Solar panel mount for Rohn 25?

Email Subscription
You are not subscribed to this topic.

Check our help page for help using Forum, or send questions, comments, or suggestions to the Forum Manager.

$\'\'$