So what does this do to the SWR??

This forum is dedicated to helping people with questions about installing radio equipment in vehicles. This can include antenna installs, electrical wiring questions/problems, and mounting systems. Pictures of installs are welcome.

Note: Discussions regarding lighting, sirens, and other equipment now has its own forum in the 'off-topic' section below.

Moderator: Queue Moderator

Post Reply
User avatar
nmfire10
Batboard $upporter
Posts: 4109
Joined: Sat Jun 29, 2002 4:41 pm

So what does this do to the SWR??

Post by nmfire10 »

To this day, I have NO idea how in the hell the antennas end up like this. There is nothing on the overhead door that would do this. I am begining to suspect a noctornal antenna twisting gremlin that lives in the attic. I am wondering what this does to the SWR of the antenna....

Image
"I'll eat you like a plate of bacon and eggs in the morning. "
- Some loser on rr.com

eBay at it's finest:
Me: "What exactly is a 900Mhz UHF CB?"
Them: "A very nice CB at 900Mhz speed!"

:-?
User avatar
Tom in D.C.
Posts: 3859
Joined: Tue Sep 04, 2001 4:00 pm
What radios do you own?: Progreso soup can with CRT

SWR, or whatever...

Post by Tom in D.C. »

Matt:

It sure isn't a 50-ohm match any longer at the main frequency you're using. Looks like lowband so probably not as bad as it would be if you were on were 155 or 460 mHz.

As far as the garage doors are concerned, it's much worse to hit the windshield frame and break the glass than to just bend the antenna. I saw a guy do this windshield trick on a '31 Alf Metropolitan once in his rush to get out of the house; he really caught hell from the chief. Just impatience and nothing more.

Regards,
Tom in D.C.
In 1920, the U.S. Post Office Department ruled
that children may not be sent by parcel post.
User avatar
mancow
Batboard $upporter
Posts: 2374
Joined: Sun Sep 09, 2001 4:00 pm

Post by mancow »

bet you're missing some tree branches in the neighborhood too




mancow
User avatar
jim
Posts: 2184
Joined: Sun Sep 09, 2001 4:00 pm

Post by jim »

That's the top-loaded "capacitance hat" style antenna that was used in low HF systems!

Seriously, I have seen departments do this so it 'slides' along garage doors or ceilings easily.
User avatar
jcobb
Posts: 1914
Joined: Fri Sep 21, 2001 4:00 pm

Post by jcobb »

I hit a bird with my Larsen lo-band, and it looked just like that when I got the little sucker unwrapped from the antenna...

Bird didn't make it.


Jack
****************************************

****************************************
Mike in CT
Posts: 282
Joined: Thu May 09, 2002 9:37 am

antenna

Post by Mike in CT »

Oh isn't that for transmitting from the NoMad C I R C L E ???


the R
User avatar
batdude
Personal aide to Mr. Cook
Posts: 2741
Joined: Thu Oct 04, 2001 4:00 pm

yup

Post by batdude »

i am with jcobb

wifey took out a seagull outside patrick AFB years ago and it did the same thing to the low band whip on my flipsplorer


yes, SWR went to hell


but at least the seagull lived



doug
User avatar
nmfire10
Batboard $upporter
Posts: 4109
Joined: Sat Jun 29, 2002 4:41 pm

Re: antenna

Post by nmfire10 »

Mike in CT wrote:Oh isn't that for transmitting from the NoMad C I R C L E ???


the R
Yea, it helps the signal bend around all the morons who can't figure out what the big YIELD signs mean. :P
"I'll eat you like a plate of bacon and eggs in the morning. "
- Some loser on rr.com

eBay at it's finest:
Me: "What exactly is a 900Mhz UHF CB?"
Them: "A very nice CB at 900Mhz speed!"

:-?
User avatar
jcobb
Posts: 1914
Joined: Fri Sep 21, 2001 4:00 pm

Post by jcobb »

Out here, you have to remind people that it's YIELD, not GIVE UP....


Jack
****************************************

****************************************
Jim202
Posts: 3610
Joined: Sun Sep 09, 2001 4:00 pm

Re: antenna

Post by Jim202 »

You might look at low tree branches, low wires and low bridges. I couldn't believe just how much a whip can be reformed when it hits something at road speed.

I use to wonder just how it happened untill i did it on one of my roof mounted whips. I remember hitting a low tree branch one day. When I got home, my whip looked much like the picture. I straightened it up and hit the same branch about an hour latter. Had the same results the second time around.

Jim
User avatar
c17loadsmasher
Posts: 200
Joined: Mon Jul 21, 2003 7:26 pm

Post by c17loadsmasher »

In SC, you have to remind people that Yield doesn't necessarily mean come to a dead stop. Also that Stop doesn't mean roll through it...
Plain language is the DEVIL. Ten-Codes Forever!!!
User avatar
nmfire10
Batboard $upporter
Posts: 4109
Joined: Sat Jun 29, 2002 4:41 pm

Post by nmfire10 »

:evil: [Picks up PA Mic] THE SIGN SAYS YIELD, NOT SURRENDER. GET MOVING! [Calmly place PA mic back on hook]
"I'll eat you like a plate of bacon and eggs in the morning. "
- Some loser on rr.com

eBay at it's finest:
Me: "What exactly is a 900Mhz UHF CB?"
Them: "A very nice CB at 900Mhz speed!"

:-?
Mike in CT
Posts: 282
Joined: Thu May 09, 2002 9:37 am

antenna

Post by Mike in CT »

What YIELD sign ?????

heh heh heh

KM1R
User avatar
n1pfc
Posts: 246
Joined: Tue Nov 12, 2002 10:55 am

Re: antenna

Post by n1pfc »

Mike in CT wrote:What YIELD sign ?????

heh heh heh

KM1R
Yield signs are ignored around here and stop signs are interpreted as yield signs... oh and what are all those funky symbols under 'SPEED LIMIT'?
I am <I>NOT</I> Hamsexy
User avatar
nmfire10
Batboard $upporter
Posts: 4109
Joined: Sat Jun 29, 2002 4:41 pm

Re: antenna

Post by nmfire10 »

Mike in CT wrote:What YIELD sign ?????

heh heh heh

KM1R

You know, I could almost understand it years ago when they just had those tiny little faded yied signs. But now the state put in these MASSIVE yield signs (like the size of a honda) and these HUGE signs before you get there telling you what to do. And people still don't get it. It is beyond me how no one has been killed in there yet. It's really funny when some jackass comes down the hill on Rt. 79 doing 80mph+ and thinks they can take the circle without slowing or stopping. :evil:

Mike, sit at Circle Pizza and while your eating lunch, just watch the circle. If you bring a camera, you can film an episode of Worlds Dumbest Drivers XXIV.
"I'll eat you like a plate of bacon and eggs in the morning. "
- Some loser on rr.com

eBay at it's finest:
Me: "What exactly is a 900Mhz UHF CB?"
Them: "A very nice CB at 900Mhz speed!"

:-?
Post Reply

Return to “Vehicle Radio Installs”