CBRT has been

New Beam Causing Havoc

A place to ask questions about base setup for CB radios or HAM radios. Talk about your experiences, seek advice, and share knowledge.
Post Reply
User avatar
Billygoat
Donor
Donor
Posts: 103
Joined: Sep 17 2007, 00:49
Contact:

New Beam Causing Havoc

#158376

Post by Billygoat »

About 3 Days ago I Installed a New Maco 3 Element Beam. My Neighbor who lives 150 feet away Grab ahold of my ear yesterday and was very nice about the situation. She Explain that I was Interfering with every TV in the House, Her Telephone and Stereo. So Far I've Had a Imax 2000 On same tower and running 2k and never interfered. I Had a Maco 5/8 5000 On same tower Running 4k. Never Had a Problem. And Just took down My i10K pushing between 8 - 9K on same tower.. With no problems. Now If I run my same radio RCI 2995dx bearfoot... Is causing problems... All My Equipment is grounded in House and so is the tower...

What can I do??? any suggestions?
User avatar
Ricky
Skipshooter
Skipshooter
Posts: 404
Joined: Oct 15 2007, 18:13
Real Name: Ricky F
Antenna: coily, a99
Radio: Magnum s9 Galaxy Bas
Contact:

#158399

Post by Ricky »

Make sure your radio is not overmodualating. also if you dont have a tvi filter, get one it will help.
User avatar
Red Warrior
Donor
Donor
Posts: 790
Joined: Jul 24 2007, 15:23
Radio: Galaxy 959
Contact:

#158413

Post by Red Warrior »

Did your SWR change between antennas? A bad connection will give those symptoms.
User avatar
Billygoat
Donor
Donor
Posts: 103
Joined: Sep 17 2007, 00:49
Contact:

#158415

Post by Billygoat »

SWR'S Are 1 1:2 Across the 40. Also i'm using LMR 400... I Have the Tower grounded... Should I ground the Base of Antenna too? Also I was thinking of upgrading to RG217 Coax...

Thanks for the Help
User avatar
PONY EXPRESS
Wordwide & Qualified
Wordwide & Qualified
Posts: 986
Joined: Aug 09 2007, 21:04
Radio: GOLDEN EAGLE Mark IV
Contact:

Re: New Beam Causing Havoc

#158418

Post by PONY EXPRESS »

Billygoat wrote:About 3 Days ago I Installed a New Maco 3 Element Beam. My Neighbor who lives 150 feet away Grab ahold of my ear yesterday and was very nice about the situation. She Explain that I was Interfering with every TV in the House, Her Telephone and Stereo. So Far I've Had a Imax 2000 On same tower and running 2k and never interfered. I Had a Maco 5/8 5000 On same tower Running 4k. Never Had a Problem. And Just took down My i10K pushing between 8 - 9K on same tower.. With no problems. Now If I run my same radio RCI 2995dx bearfoot... Is causing problems... All My Equipment is grounded in House and so is the tower...

What can I do??? any suggestions?
You need to wind a coaxial rf choke and have it at the base of the antenna. This will eliminate the coax from radiating . Always at the base of the antenna so no coax
Basically a rf choke is 7-8 equal turns of coax approx 6 inches across in diamater. use tie straps or good black tape to hold it in place Coffee cans make perfect size molds.Slide the coax carefully off the can and please dont leave the can up in the air with coax taped to it :D .

I guess if that doesnt work you can always not point the antenna in her direction but to me thats not an alternative. I like solving the problems.

[Please login or register to view this link]
Its not a real radio unless it has tubes and USB/LSB on the front panel ....
User avatar
721HACKSAW
Donor
Donor
Posts: 1,557
Joined: Feb 25 2008, 10:43

#159513

Post by 721HACKSAW »

I have a 2995 that is SWPed, but no other power, an Imax 55' up on a tower, ground rod at the base, and ground strap. I do not run the 2995 wide open, DK about 90, swing to about 200. I bleed the surround sound system in my own house, now if I turn the mic gain up past about 1 oclock my friend down the street calls me to tell me I am bleeding his surround system, I turn it down slightly no problems. I have tried grabbing the coax while transmitting and don't see any difference, I believe it is the modulation level in my case.
User avatar
pipsqueek
Skipshooter
Skipshooter
Posts: 235
Joined: Jan 16 2008, 06:40

#160089

Post by pipsqueek »

Don't think a coax upgrade will make a difference. Let's see....you had all those vertical antennas, running high power and no problems. I'll be willing to bet you installed the beam horizontally...then the problems began. If so there is some horizontal component in her house/area (wiring, gutters, fence, etc.) gathering your rf and easily transferring to the appliances. Try the thing vertical and see if it stops.
On a side note RCA engineers Gain and Greyline proved without a doubt that modulation qualities of certain speech components are more effective on horizontal antennas.
pips
User avatar
231

#160101

Post by 231 »

I agree, I'd try a coaxial choke balun at the boom, reasonably close to the gamma match.

;)
User avatar
Billygoat
Donor
Donor
Posts: 103
Joined: Sep 17 2007, 00:49
Contact:

#160108

Post by Billygoat »

As of So Far. Maco 3 element is vertical, Changed gamma To 100K, Installed New 218 Coax. Did the RF Choke. Ground Rods are in Place. I Run A Shure KSM 44 studio Mic into a Tube Pre-amp T1952 and then into a Processor Then into My RCI 2995dx Into a Fatboy Straight 6 Into A 3XC10000A Tube Box. And Still Causes Problems... If My beam Is faced away from everything.. it only puts lines in her tv but can still hear me talking. and the antenna is about 20 Ft above her roof line. Also I purchased Rfi Filters and they are installed on here tv's. I'm just going to by a 500ft roll of 218 and move tower to back part of property... I really don't ever face the beam east so it never be pointed towards the houses....

Thanks
User avatar
dud muck
Donor
Donor
Posts: 1,162
Joined: Dec 14 2006, 22:04
Contact:

#160109

Post by dud muck »

This beam is a directional antenna. You have it mounted on a rotor?
You can experiment with aiming rotor at different directions to see what causes the most trouble.
Is this mounted vertical or horizontal?
Image
Unlimited power permitted on CH1 to CH27 as per FCC CFR 47 part 18: 18.305(a) and 18.301
User avatar
pipsqueek
Skipshooter
Skipshooter
Posts: 235
Joined: Jan 16 2008, 06:40

#160146

Post by pipsqueek »

Toss my theory out the window :oops:
Sorry
User avatar
lonesome 500
Donor
Donor
Posts: 1,779
Joined: Jun 08 2007, 15:40

#160154

Post by lonesome 500 »

[Please login or register to view this link]

Image

The second 2995 problem...........

If you have had ANYTHING.....CUT>>>CLIPPED>>>>REMOVED........or ect..........this causes tvi......find out about your transmitter

The antenna........DOES NOT cause tvi.....IT may radiate the signal differently....But the trash on the signal was there to begin with...

a transmitter can obtain 100% performance without all this.......
User avatar
cornbrown
6 PILL USER
6 PILL USER
Posts: 70
Joined: Mar 07 2007, 15:48

#166628

Post by cornbrown »

Any update?? Were you able to stop the RFI and TVI to your neighbor?
User avatar
fortymobile
Skipshooter
Skipshooter
Posts: 278
Joined: Apr 01 2008, 16:20
Contact:

#166633

Post by fortymobile »

One question do you have Guidewires ?????
Post Reply