Re: [MBZ] Power antenna relay on 1985 300CD?

[Jim Cathey]

Why/when would you want it at half-mast?


On an SL, in particular, they whistle noticeably in the wind.
Raising them only the necessary amount for good reception
is nice for those.  Also, not raising them the full amount
extends their life to some extent, and reduces the vulnerability
to damage.  I suppose there are also multipath scenarios in
cities, but I've never run into those.

The power wire for the antenna was not plugged into the correct jack 
on the

radio.  The antenna plug has 4 pins but doesn't function as it should.


The three-wire antenna has a four-wire-plug adapter cable,
so it can plug in place of the correct (NLA) antenna.

But it ain't right (IMHO).

-- Jim



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Re: [MBZ] Power antenna relay on 1985 300CD?

[andrew strasfogel]

The power wire for the antenna was not plugged into the correct jack on the
radio.  The antenna plug has 4 pins but doesn't function as it should.

On Sun, Aug 16, 2009 at 1:36 PM, Jim Cathey  wrote:

> the power plug was misconnected.  Antenna now
>> fully extends but doesn't operate at half-mast,
>>
>
> How misconnected?  It's a keyed four-position (?) plug.
> Or do you have one of the modern three-wire replacements
> that does _not_ support any but full extension?
>
>
> -- Jim
>
>
>
> ___
> http://www.okiebenz.com
> For new and used parts go to www.okiebenz.com
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Re: [MBZ] Power antenna relay on 1985 300CD?

[andrew strasfogel]

We are in an areas with multiple TV and radio broadcasting stations so need
to lower the antenna occasionally to combat signal bleeding.

On Sun, Aug 16, 2009 at 8:59 PM, WILTON  wrote:

> Why/when would you want it at half-mast?
> Wilton
>
> - Original Message - From: "Jim Cathey" 
> To: "Mercedes Discussion List" 
> Sent: Sunday, August 16, 2009 1:36 PM
> Subject: Re: [MBZ] Power antenna relay on 1985 300CD?
>
>
>
>  the power plug was misconnected.  Antenna now
>>> fully extends but doesn't operate at half-mast,
>>>
>>
>> How misconnected?  It's a keyed four-position (?) plug.
>> Or do you have one of the modern three-wire replacements
>> that does _not_ support any but full extension?
>>
>> -- Jim
>>
>>
>>
>> ___
>> http://www.okiebenz.com
>> For new and used parts go to www.okiebenz.com
>> To search list archives http://www.okiebenz.com/archive/
>>
>> To Unsubscribe or change delivery options go to:
>> http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
>>
>
> ___
> http://www.okiebenz.com
> For new and used parts go to www.okiebenz.com
> To search list archives http://www.okiebenz.com/archive/
>
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Re: [MBZ] Power antenna relay on 1985 300CD?

[WILTON]

Why/when would you want it at half-mast? 


Wilton

- Original Message - 
From: "Jim Cathey" 

To: "Mercedes Discussion List" 
Sent: Sunday, August 16, 2009 1:36 PM
Subject: Re: [MBZ] Power antenna relay on 1985 300CD?



the power plug was misconnected.  Antenna now
fully extends but doesn't operate at half-mast,


How misconnected?  It's a keyed four-position (?) plug.
Or do you have one of the modern three-wire replacements
that does _not_ support any but full extension?

-- Jim



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Re: [MBZ] Power antenna relay on 1985 300CD?

[Jim Cathey]

the power plug was misconnected.  Antenna now
fully extends but doesn't operate at half-mast,


How misconnected?  It's a keyed four-position (?) plug.
Or do you have one of the modern three-wire replacements
that does _not_ support any but full extension?

-- Jim



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Re: [MBZ] Power antenna relay on 1985 300CD?

[andrew strasfogel]

The bayonet fitting was OK but the power plug was misconnected.  Antenna now
fully extends but doesn't operate at half-mast, even after I swapped the
antenna switch.  The old antenna did operate at half mast,  Ideas?

On Fri, Aug 14, 2009 at 5:10 PM, andrew strasfogel wrote:

> It just occurred me that perhaps the power cord to the antenna had slipped
> out of the back of the radio (bayonet connection).  Wouldn't that be a
> pleasant surprise!
>
>
> On Fri, Aug 14, 2009 at 5:04 PM, Jim Cathey  wrote:
>
>>  "antenna motor/relay" downstream of the fuse box but I can't find this
>>> part
>>> on ebay or in any of the online catalogs, let alone deduce where to find
>>> it
>>> in the car!
>>>
>>
>> There is no relay.  There is the antenna.  Many parts suppliers
>> call anything of moderate size in a box a 'relay'.  It's easy
>> to check the connector pins at the relay for power, etc.  At
>> that vintage, the innards are purely electromechanical, so
>> open 'er up and have a look if the connector checks out.
>>
>> -- Jim
>>
>>
>>
>> ___
>> http://www.okiebenz.com
>> For new and used parts go to www.okiebenz.com
>> To search list archives http://www.okiebenz.com/archive/
>>
>> To Unsubscribe or change delivery options go to:
>> http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
>>
>
>
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Re: [MBZ] Power antenna relay on 1985 300CD?

[andrew strasfogel]

It just occurred me that perhaps the power cord to the antenna had slipped
out of the back of the radio (bayonet connection).  Wouldn't that be a
pleasant surprise!

On Fri, Aug 14, 2009 at 5:04 PM, Jim Cathey  wrote:

> "antenna motor/relay" downstream of the fuse box but I can't find this part
>> on ebay or in any of the online catalogs, let alone deduce where to find
>> it
>> in the car!
>>
>
> There is no relay.  There is the antenna.  Many parts suppliers
> call anything of moderate size in a box a 'relay'.  It's easy
> to check the connector pins at the relay for power, etc.  At
> that vintage, the innards are purely electromechanical, so
> open 'er up and have a look if the connector checks out.
>
> -- Jim
>
>
>
> ___
> http://www.okiebenz.com
> For new and used parts go to www.okiebenz.com
> To search list archives http://www.okiebenz.com/archive/
>
> To Unsubscribe or change delivery options go to:
> http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
>
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Re: [MBZ] Power antenna relay on 1985 300CD?

[Jim Cathey]

"antenna motor/relay" downstream of the fuse box but I can't find this 
part
on ebay or in any of the online catalogs, let alone deduce where to 
find it

in the car!


There is no relay.  There is the antenna.  Many parts suppliers
call anything of moderate size in a box a 'relay'.  It's easy
to check the connector pins at the relay for power, etc.  At
that vintage, the innards are purely electromechanical, so
open 'er up and have a look if the connector checks out.

-- Jim



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[MBZ] Power antenna relay on 1985 300CD?

[andrew strasfogel]

I am getting no power to the power antenna on the 1985 300CD.  The radio
works and I swapped out the antenna switches - no effect.  All other
electrical functions are good, so it isn't a fuse.  The schematic shows an
"antenna motor/relay" downstream of the fuse box but I can't find this part
on ebay or in any of the online catalogs, let alone deduce where to find it
in the car!  Has anyone ever replaced one of these to solve similar symptoms
(dead antenna)?
Thanks again,

Andrew
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