Hi ng,

The boat came with a Fastnet Radio FMD55P navtex-receiver, using a
passive antenna: the insulated backstay via a Balun.
Now I installed a ssb transceiver + tuner and connected the tuner to
the backstay. The navtex receiver is not in use at the moment cause
I'm sure the transmitting power of the ssb wil fry it.

Is there a way to solve this cause I would like to use the navtex
again,.It has no possibility for an active antenna, just passive. I
would like to use the backstay for both now I "heared" about a switch
that immediately switches off the connection to the navtex when it
senses ssb-transmitting, Any thoughts ? Every reaction will be highly
appreciated.


Regards, Len

In article
,
Len wrote:

Hi ng,

The boat came with a Fastnet Radio FMD55P navtex-receiver, using a
passive antenna: the insulated backstay via a Balun.
Now I installed a ssb transceiver + tuner and connected the tuner to
the backstay. The navtex receiver is not in use at the moment cause
I'm sure the transmitting power of the ssb wil fry it.

Is there a way to solve this cause I would like to use the navtex
again,.It has no possibility for an active antenna, just passive. I
would like to use the backstay for both now I "heared" about a switch
that immediately switches off the connection to the navtex when it
senses ssb-transmitting, Any thoughts ? Every reaction will be highly
appreciated.


Regards, Len

Good way to burn out the front end of the NavTex Receiver.....

--
Bruce in alaska
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Bruce in alaska wrote in news:fast-78478E.10114826052008
@netnews.worldnet.att.net:

Good way to burn out the front end of the NavTex Receiver.....

--
Bruce in alaska
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.....if it isn't ALREADY fried when he got the boat.....(c;

On 26 mei, 19:05, Larry wrote:

Good way to burn out the front end of the NavTex Receiver.....

....if it isn't ALREADY fried when he got the boat.....(c;

The navtex is fine. The guy selling the switch gives written warranty
on any damage to the receiving part of the navtex and the firm has
been around for a while. He designed 4 mechanisms / defense lines to
prevent voltage / current to pass to the navtex. But maybe you're
right and is it too risky.

So, now what, I'm restricted to a passive antenna for the navtex. What
do you think of a whip on the radar arch for the navtex. It would be a
bit close to the backstay, some 4-5 feet.

TIA,
Len.

Len wrote in news:88578aef-f6e5-40c2-a385-
:

On 26 mei, 19:05, Larry wrote:

Good way to burn out the front end of the NavTex Receiver.....

....if it isn't ALREADY fried when he got the boat.....(c;

The navtex is fine. The guy selling the switch gives written warranty
on any damage to the receiving part of the navtex and the firm has
been around for a while. He designed 4 mechanisms / defense lines to
prevent voltage / current to pass to the navtex. But maybe you're
right and is it too risky.

So, now what, I'm restricted to a passive antenna for the navtex. What
do you think of a whip on the radar arch for the navtex. It would be a
bit close to the backstay, some 4-5 feet.

TIA,
Len.


The backstay will give SIGNIFICANTLY more static to the receiver on 518 Khz
than the appropriate loopstick I mentioned earlier. The loopstick antenna
mounted on the handrail is a MUCH better antenna for NAVTEX than that
backstay, it's really cheap and easy to install.....so why take that
chance? Doesn't make any sense.

On 27 mei, 10:50, Larry wrote:
The backstay will give SIGNIFICANTLY more static to the receiver on 518 Khz
than the appropriate loopstick I mentioned earlier. *The loopstick antenna
mounted on the handrail is a MUCH better antenna for NAVTEX than that
backstay, it's really cheap and easy to install.

Tnx Larry, my receiver can't work with a active antenna, only with a
passive one.
Is a loopstick still suitable?
If so, how do I build or where can I buy a loopstick antenna?

Regards, Len.
www.svpresent.waarbenjij.nu (in Dutch)

Len wrote in news:c9948c70-947b-473f-8f01-
:

Tnx Larry, my receiver can't work with a active antenna, only with a
passive one.
Is a loopstick still suitable?
If so, how do I build or where can I buy a loopstick antenna?



Not true. The active antenna has a "coupler" that adds DC to the coax
cable out to the antenna, but doesn't feed it through a capacitor to the
receiver. The receiver is plugged into the coupler, the coupler to the
antenna cable. The receiver is not involved at powering the
antenna....just enjoying the nice signal strength.