CBRT has been

Home made base Antenna(s)

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
sideways
Donor
Donor
Posts: 401
Joined: Jan 13 2007, 13:04
Contact:

Home made base Antenna(s)

#131982

Post by sideways »

Helpppppppppp. I saw someone post making a dipole antenna for a base and it was in answer to someone else post so search gives me about 3600 hits.Due to the weather in the Buckeye I can't get to the roof until a thaw, it is a 12 12 pitch so it needs to be warm out to crawl around up there,LOL. So in the mean time I would like to put an antenna up in the "attic". Thanks to all the great info on here I helped my son-in-law pick a radio for his big truck,an rci2970,which he"found a great deal on from a fellow driver who had his own radio shop". After he got it I got calls to explain how far and loud he was tx/rx ing. Well little did I know he already knew about the 2970 and the calls were just to bust my chops, until he could give me the radio for Xmas (just the kind of guy he is,little ba.....).Now I ran to the local dealer and got coax a pyramid PS-52KX power supply(since the money for a base radio was now free) and a NGP B100 Saturn base antenna. Needless to say I'm not impressed, just in a jamb because of weather and I want to get talking.So if anyone can help better the situation it would be greatly appreciated. Yes I did hook the 2970 up in the mobile for the ride home and it was great, and can't beat the price.
User avatar
Rico
Skipshooter
Skipshooter
Posts: 261
Joined: Dec 06 2007, 02:20
Contact:

Re: Home made base Antenna(s)

#131983

Post by Rico »

sideways wrote:Helpppppppppp. I saw someone post making a dipole antenna for a base and it was in answer to someone else post so search gives me about 3600 hits.Due to the weather in the Buckeye I can't get to the roof until a thaw, it is a 12 12 pitch so it needs to be warm out to crawl around up there,LOL. So in the mean time I would like to put an antenna up in the "attic". Thanks to all the great info on here I helped my son-in-law pick a radio for his big truck,an rci2970,which he"found a great deal on from a fellow driver who had his own radio shop". After he got it I got calls to explain how far and loud he was tx/rx ing. Well little did I know he already knew about the 2970 and the calls were just to bust my chops, until he could give me the radio for Xmas (just the kind of guy he is,little ba.....).Now I ran to the local dealer and got coax a pyramid PS-52KX power supply(since the money for a base radio was now free) and a NGP B100 Saturn base antenna. Needless to say I'm not impressed, just in a jamb because of weather and I want to get talking.So if anyone can help better the situation it would be greatly appreciated. Yes I did hook the 2970 up in the mobile for the ride home and it was great, and can't beat the price.

Do a search under all the posts I've made since joining. I was in that conversation, but don't remember what thread, and I have to leave for work. It's a simple design. You use one antenna for your lead and the other for counterpoise. Hope this helps. Gotta run. :)
User avatar
DX_MONKEY

#132035

Post by DX_MONKEY »

Hi guy,

The attic antenna is going to be problematic. You could put up a typical horizontal dipole up there but then.....you'll be horizontally polarized. All AM CB work is vertical. But you could work DX with it. Plus, a horizontal dipole will be directional getting out front and back but pretty much not at all off of the ends. A dipole for 27mhz CB will be 18 feet long so I doubt that will stand up in your attic unless you have some kind of huge honking attic with over 20 feet of headroom.

I understand wanting to mount a permanent ant. up on the roof. Why not get your permanent antenna and stick it out on a mast pole beside the house until spring when you can get back on the roof? A great and inexpensive mast would be a 21 foot top rail galvanized fence pipe. You can get these at Lowes or a fence supply company.


Shorter vertical antennas in the attic MIGHT work but verticals like being in what is called " free space, " That is, they don't like being mounted near any other nearby objects like building material. That's why they get put up in the air. The signals will reflect off of nearby objects and create an SWR situation they wouldn't otherwise have and it also distorts the TX radiation pattern.


good luck bro
User avatar
231

#132091

Post by 231 »

Sideways, I sent you a PM with some more links though.

;)
User avatar
fireball894
Skipshooter
Skipshooter
Posts: 324
Joined: Oct 31 2006, 19:30
Real Name: George
Radio: Cobra 2000
Contact:

#132138

Post by fireball894 »

It's gonna be in the 50's to 60's this coming week, get yourself an a99 or Imax, stick it up in the air above the roof, and see where you get to.

Turn the amp on, and yell some. The Warren area is on ch22, and us around the Sharon/Hubbard/Youngstown are are on 33. Got some big strappers around Akron on ch 17. Not quite sure what the Cleveland channels are, except channel 10.

Get on there with a good antenna and start shouting! 8)
Channel 32, or sometimes 33 and or 34......
User avatar
sideways
Donor
Donor
Posts: 401
Joined: Jan 13 2007, 13:04
Contact:

:

#132370

Post by sideways »

Thanks for the info guys,bears out what I thought, going to be about as costly for a temp set-up as it will for the real deal.Oh wait a min. deal (did I mention the 2970 was FREE (( sorry couldn't resist :D ) Which now means the urban assault vech. now has the Cobra 200 w/foot warmer, a talking mobile command post :wink: , and now when I get the (leaning towards an Imax 2000 w/gpk) base set-up I'll feel like one of the guys. In a little better info of where it is going ,will be a chimney mount on a bungalow.Not sure if I want mast sections or not for height.(bungalow = 2 story)corner lot,house faces south and a street,west faces another street. Only adjacent neighbor is E where a TV antenna is mounted on stand offs with only the top sec of a "mast". Chimney is off center to the west,peak runs E-W. Wondering if the POS antenna I have now would do better on top of that for temp.?????? instead of in the attic where it is now.
User avatar
saeger
2 PILL USER
2 PILL USER
Posts: 17
Joined: Jun 21 2007, 20:36
Contact:

#134350

Post by saeger »

Absolutely, height=might! The only consideration is that the CB antenna should be 8ft away from the TV antenna or else there not going to be happy. But remember that when you key up your radio your going to obliterate your TV reception anyway. I've got a 17 ft dipole mounted on a 10ft 2X4 on one side of my deck and a 35 foot pole with my TV antenna on it on the other and my 5 watt radio kills the TV picture, I cant imagine what would happen with an amp.
Post Reply