CRG Discussion Forum
Welcome, Guest. Please login or register.
Did you miss your activation email?
September 21, 2014, 07:08:29 AM

Login with username, password and session length
Search:     Advanced search
Welcome to the CRG Discussion Forum!
Forum registration problems: Make sure you enter your email correctly and you check your spam box first. *Then* email KurtS2@gmail for help.
104616 Posts in 12242 Topics by 4719 Members
Latest Member: Baconcks
* Home Help Search Login Register
+  CRG Discussion Forum
|-+  Camaro Research Group Discussion
| |-+  Originality
| | |-+  AM/FM antenna mast height
« previous next »
Pages: [1] 2  All Print
Author Topic: AM/FM antenna mast height  (Read 2094 times)
sixt9x33rs
Hero Member
*****
Posts: 840



View Profile
« on: June 08, 2013, 06:47:42 PM »

I own a 12C 69 convertible am/fm with a antenna mast height of 23 17/32 inches tall. I recently owned a 4D 69 Convertible am/fm car with a taller mast height. Not by much but slightly taller. The reason I know this is because I had to take the mast off the 4D car to get under my lift. The 12C cars fits with the mast on the car. Both masts appear to be original. Was there a antenna mast height change from the earlier cars to the mid production cars?

Thanks

Lawrence
Logged

'69 RS Z/28 Olympic Gold, 711
Flat hood no spoiler, black top, endura, 4:10
POP 39,000
69 X77 Z/28 69 711 Original Paint Unrestored
'69 X66 Convertible Cortez Silver 712 black top Endura, auto, bumper guards, am/fm rear speaker 44k miles
Ed Bertrand
CRG Member
*****
Posts: 2333


View Profile
« Reply #1 on: June 08, 2013, 10:25:22 PM »

As far as I know, all 67-69 Camaro AM/FM antennas had a mast height of 30" (actually, 30.125" measured from the bottom of the retaining nut to the top of the ball).

Post some pictures of the bottom where it screws into the body from both cars.

Ed
Logged
sixt9x33rs
Hero Member
*****
Posts: 840



View Profile
« Reply #2 on: June 09, 2013, 08:57:14 AM »

12C car's antenna.
Logged

'69 RS Z/28 Olympic Gold, 711
Flat hood no spoiler, black top, endura, 4:10
POP 39,000
69 X77 Z/28 69 711 Original Paint Unrestored
'69 X66 Convertible Cortez Silver 712 black top Endura, auto, bumper guards, am/fm rear speaker 44k miles
sixt9x33rs
Hero Member
*****
Posts: 840



View Profile
« Reply #3 on: June 09, 2013, 08:57:48 AM »

Base
Logged

'69 RS Z/28 Olympic Gold, 711
Flat hood no spoiler, black top, endura, 4:10
POP 39,000
69 X77 Z/28 69 711 Original Paint Unrestored
'69 X66 Convertible Cortez Silver 712 black top Endura, auto, bumper guards, am/fm rear speaker 44k miles
sixt9x33rs
Hero Member
*****
Posts: 840



View Profile
« Reply #4 on: June 09, 2013, 09:03:26 AM »

04D Car antenna base
Logged

'69 RS Z/28 Olympic Gold, 711
Flat hood no spoiler, black top, endura, 4:10
POP 39,000
69 X77 Z/28 69 711 Original Paint Unrestored
'69 X66 Convertible Cortez Silver 712 black top Endura, auto, bumper guards, am/fm rear speaker 44k miles
Ed Bertrand
CRG Member
*****
Posts: 2333


View Profile
« Reply #5 on: June 09, 2013, 11:22:37 AM »

Yep, those look correct. What's the diameter of the ball?

Ed
Logged
WorkinProgress
Member
***
Posts: 36


View Profile
« Reply #6 on: June 09, 2013, 02:17:36 PM »

Lawrence, are the ends that go into the radio straight, or right angles?

                                                         - Warren
Logged
sixt9x33rs
Hero Member
*****
Posts: 840



View Profile
« Reply #7 on: June 09, 2013, 08:55:40 PM »

Right angles on both cars.
Logged

'69 RS Z/28 Olympic Gold, 711
Flat hood no spoiler, black top, endura, 4:10
POP 39,000
69 X77 Z/28 69 711 Original Paint Unrestored
'69 X66 Convertible Cortez Silver 712 black top Endura, auto, bumper guards, am/fm rear speaker 44k miles
vtfb68
Member
***
Posts: 366


View Profile Email
« Reply #8 on: June 09, 2013, 09:49:45 PM »

Are the cars the same height?
   VT
Logged

05C LA RS/SS U2 712 L34 M21 BR
08E LA RS Y2 749 L30 M35
"In the pursuit of accuracy"
sixt9x33rs
Hero Member
*****
Posts: 840



View Profile
« Reply #9 on: June 10, 2013, 07:25:48 AM »

 The height difference in the antenna is too great to be made up in ride height in the cars. I don't own the blue car anymore though.
Logged

'69 RS Z/28 Olympic Gold, 711
Flat hood no spoiler, black top, endura, 4:10
POP 39,000
69 X77 Z/28 69 711 Original Paint Unrestored
'69 X66 Convertible Cortez Silver 712 black top Endura, auto, bumper guards, am/fm rear speaker 44k miles
paceme
Member
***
Posts: 459


View Profile
« Reply #10 on: June 10, 2013, 08:26:28 AM »


Ride height is not a factor. If I remember correctly (my antenna theory occured 35+ years ago) the fixed height antenna is 1/4 wave configuration, 30 inches was chosen for best overall reception because its tuned for the midway point on the FM dial. If you shorten the antenna three inches it increase the sensitivity for stations on the low end of the dial, and if you lengthen it will 3 inches it will increase the sensitivity for station on the high end of scale. Not sure why your antenna is 23 inches.
Logged

Steve Shauger
Vintage Certification™ Program, Providing Recognition And Status To Unrestored Vehicles. Website www.vintagecertification.com
Ed Bertrand
CRG Member
*****
Posts: 2333


View Profile
« Reply #11 on: June 10, 2013, 09:01:04 AM »

I agree with Steve. The only reason I can think of is that someone has removed part of the antenna to receive lower stations.

Ed
Logged
sixt9x33rs
Hero Member
*****
Posts: 840



View Profile
« Reply #12 on: June 10, 2013, 02:34:22 PM »

Hmmm.....could be....
Logged

'69 RS Z/28 Olympic Gold, 711
Flat hood no spoiler, black top, endura, 4:10
POP 39,000
69 X77 Z/28 69 711 Original Paint Unrestored
'69 X66 Convertible Cortez Silver 712 black top Endura, auto, bumper guards, am/fm rear speaker 44k miles
lakeholme
Hero Member
*****
Posts: 2153


*68-12D L30/M35*


View Profile WWW
« Reply #13 on: June 10, 2013, 04:41:50 PM »

So, Lawrence, are you the original owner?  In other words, did a previous owner like the "stubby" antenna look?
If you type "shorten car antenna" in a search engine, you'll get close to a million hits.  A few years ago, we saw quite a bit of that on the show field.
BTW, many of those sites have some interesting, non-scientific suggestions as to how it won't hurt reception....   Roll Eyes
Logged

Phillip
HNR-AACA, Senior Master
Planning 2016 Sentimental Tour, AACA (and restoring a 40 Buick Special for it)
AACA Southeastern Division Spring Meet Chair
"Charlotte AutoFair, presented by the Hornets Nest Region, AACA, is the largest and greatest Collector Vehicle Event in the Southeast USA."
sixt9x33rs
Hero Member
*****
Posts: 840



View Profile
« Reply #14 on: June 10, 2013, 05:11:32 PM »

Wish I was the original owner, but no. I guess someone did shorten the antenna. If they only came in one height. The blue car antenna was definitely taller, and hit the lift when I parked it under the other car. Would the antenna been cut from the bottom or top? I would like to see if I can see a jagged saw cut or evidence of a snip. I will let you know if I find anything.

Thanks
Logged

'69 RS Z/28 Olympic Gold, 711
Flat hood no spoiler, black top, endura, 4:10
POP 39,000
69 X77 Z/28 69 711 Original Paint Unrestored
'69 X66 Convertible Cortez Silver 712 black top Endura, auto, bumper guards, am/fm rear speaker 44k miles
Pages: [1] 2  All Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.076 seconds with 18 queries.