I'm in Honduras aboard a boat and am trying to take the output of my
high frequency radio (SSB) which available via a connector described in
the manual as "Output of the audio power amplifier. AC Coupled" and
connect it to the Aux Input of my stereo system so that I can hear the
SSB via my cockpit speakers. However, when I do this all that I get
is noise. Is there anyway to do this (especially noting that I'm in
the middle of nowhere and most things that you can pick up in the US
aren't available here)?

I will point out that there is a Low Level receiver output which is
configured for unbalanced 300 ohm lines that I could hook to, but it is
used to feed a Pactor high frequency modem. Connecting (Y connection)
a line to this causes a degradation of the signal to the modem which
makes this an unusable option. So please, don't pursue this as an
option.

Any ideas? Someone suggested a 10K ohn resistor on the output of the
SSB, but before I try to track one of those down, I thought that I'd
ask here.

Thanks, Geoff

wrote in message
oups.com...
I'm in Honduras aboard a boat and am trying to take the output of my
high frequency radio (SSB) which available via a connector described in
the manual as "Output of the audio power amplifier. AC Coupled" and
connect it to the Aux Input of my stereo system so that I can hear the
SSB via my cockpit speakers. However, when I do this all that I get
is noise. Is there anyway to do this (especially noting that I'm in
the middle of nowhere and most things that you can pick up in the US
aren't available here)?

I will point out that there is a Low Level receiver output which is
configured for unbalanced 300 ohm lines that I could hook to, but it is
used to feed a Pactor high frequency modem. Connecting (Y connection)
a line to this causes a degradation of the signal to the modem which
makes this an unusable option. So please, don't pursue this as an
option.

Any ideas? Someone suggested a 10K ohn resistor on the output of the
SSB, but before I try to track one of those down, I thought that I'd
ask here.

Thanks, Geoff

wrote in message
oups.com...
I'm in Honduras aboard a boat and am trying to take the output of my
high frequency radio (SSB) which available via a connector described in
the manual as "Output of the audio power amplifier. AC Coupled" and
connect it to the Aux Input of my stereo system so that I can hear the
SSB via my cockpit speakers. However, when I do this all that I get
is noise. Is there anyway to do this (especially noting that I'm in
the middle of nowhere and most things that you can pick up in the US
aren't available here)?

I will point out that there is a Low Level receiver output which is
configured for unbalanced 300 ohm lines that I could hook to, but it is
used to feed a Pactor high frequency modem. Connecting (Y connection)
a line to this causes a degradation of the signal to the modem which
makes this an unusable option. So please, don't pursue this as an
option.

Any ideas? Someone suggested a 10K ohn resistor on the output of the
SSB, but before I try to track one of those down, I thought that I'd
ask here.

Thanks, Geoff


Geoff, apparently you need something similar to the interface that is used
to hook a car power amp to an existing stereo system. this should attenuate
the output signal of the SSB unit which could be several volts to -10 dbu
(less then 1 volt).

a standard volume control pot might work. the wiper (center lug) would go to
the stereo input. ideally an audio transformer should be used for isolation
between units.

i think that given you have zero parts to work with that simply unhooking
one speaker form your stereo and wiring it directly to the SSB audio output
would be reasonably certain to work.

When you say you get nothing but noise, do you literally mean nothing but
noise, i.e., no sign of the original audio?

If so, is it possible you're not making the connection at all?

Could you take the output from across the speaker -- rather than at the
output connector -- and feed that to Aux? If the SSB is driving a rather
small speaker, the levels should be compatible.

First off, thanks for the advice. I really appreciate it. It's very
tough trying to figure this stuff out down here with my limited
Spanish. Finding a volume control pot should be possible. It'll just
probably take a taxi ride with many stops.

Disconnecting the speakers from the stereo really isn't an option as
that would mean that I'd need an A/B switch (which I don't have) as I
still want to be able to listen to music on the cockpit speakers. If I
need to look for 1 part, I may as well look for one that really solves
the problem.

While I'm at this, I should tackle all of my similiar issues. I have a
Sony DVD player with your normal R/L RCA jack audio output. This plugs
into the TV with a Y adapter, but the volume is quite low. When I feed
this to the Aux Input of the stereo I get the same loud buzzing. Do I
have the same problem as I first described? There's also an S-video
output, but I believe that's only video.

Thanks, Geoff (in La Ceiba, Honduras)

"GeoffSchultz" wrote in message
oups.com...
First off, thanks for the advice. I really appreciate it. It's very
tough trying to figure this stuff out down here with my limited
Spanish. Finding a volume control pot should be possible. It'll just
probably take a taxi ride with many stops.

Disconnecting the speakers from the stereo really isn't an option as
that would mean that I'd need an A/B switch (which I don't have) as I
still want to be able to listen to music on the cockpit speakers. If I
need to look for 1 part, I may as well look for one that really solves
the problem.

While I'm at this, I should tackle all of my similiar issues. I have a
Sony DVD player with your normal R/L RCA jack audio output. This plugs
into the TV with a Y adapter, but the volume is quite low. When I feed
this to the Aux Input of the stereo I get the same loud buzzing. Do I
have the same problem as I first described? There's also an S-video
output, but I believe that's only video.

Thanks, Geoff (in La Ceiba, Honduras)


are you using sheilded audio cable to make the connection?

"TimPerry" wrote in message
...

"GeoffSchultz" wrote in message
oups.com...
First off, thanks for the advice. I really appreciate it. It's
very
tough trying to figure this stuff out down here with my limited
Spanish. Finding a volume control pot should be possible. It'll
just
probably take a taxi ride with many stops.

Disconnecting the speakers from the stereo really isn't an option
as
that would mean that I'd need an A/B switch (which I don't have)
as I
still want to be able to listen to music on the cockpit speakers.
If I
need to look for 1 part, I may as well look for one that really
solves
the problem.

While I'm at this, I should tackle all of my similiar issues. I
have a
Sony DVD player with your normal R/L RCA jack audio output. This
plugs
into the TV with a Y adapter, but the volume is quite low. When I
feed
this to the Aux Input of the stereo I get the same loud buzzing.
Do I
have the same problem as I first described? There's also an
S-video
output, but I believe that's only video.

Thanks, Geoff (in La Ceiba, Honduras)


are you using sheilded audio cable to make the connection?



On a boat it will make little difference if it is shielded or not -
there's no 'mains' as such!


--
Woody

harrogate3 at ntlworld dot com

"GeoffSchultz" wrote in message
oups.com...
First off, thanks for the advice. I really appreciate it. It's
very
tough trying to figure this stuff out down here with my limited
Spanish. Finding a volume control pot should be possible. It'll
just
probably take a taxi ride with many stops.

Disconnecting the speakers from the stereo really isn't an option
as
that would mean that I'd need an A/B switch (which I don't have)
as I
still want to be able to listen to music on the cockpit speakers.
If I
need to look for 1 part, I may as well look for one that really
solves
the problem.

While I'm at this, I should tackle all of my similiar issues. I
have a
Sony DVD player with your normal R/L RCA jack audio output. This
plugs
into the TV with a Y adapter, but the volume is quite low. When I
feed
this to the Aux Input of the stereo I get the same loud buzzing.
Do I
have the same problem as I first described? There's also an
S-video
output, but I believe that's only video.

Thanks, Geoff (in La Ceiba, Honduras)


are you using sheilded audio cable to make the connection?



On a boat it will make little difference if it is shielded or not -
there's no 'mains' as such!


--
Woody

harrogate3 at ntlworld dot com


so far we have no idea if this is small pleasure craft or large yacht, nor
do we know if it AC or DC power or a combination.

in any event a low level unshielded audio wire near a SSB transmitter sounds
like a recipe for problems.

Which connection? From the RCA audio jacks on the DVD player it goes
to a cable which has a mini connector which plugs into my stereo Aux
In. It's the same size and configuration as other plugs which work
properly. The tip of the plug is the left channel, followed by the
right channel and then ground. When I plug this into to Aux In all I
get is a loud buzz.

In this case there is 120V present. The radio is 12V and the DVD
player is 120V. Both grounds are common.

-- Geoff

This is a 40' sailboat and per my last reply it's a mixed 12V/120V
system (when dealing with the DVD player) but the grounds are tied
together per AYBC standards. The cable from the SSB is shielded but at
this point I'm working the DVD issue while I search for a volume
trim-pot for the SSB output.

-- Geoff

'm in Honduras aboard a boat and am trying to take the output of my
high frequency radio (SSB) which available via a connector described in
the manual as "Output of the audio power amplifier. AC Coupled" and
connect it to the Aux Input of my stereo system so that I can hear the
SSB via my cockpit speakers. However, when I do this all that I get
is noise. Is there anyway to do this (especially noting that I'm in
the middle of nowhere and most things that you can pick up in the US
aren't available here)?

I will point out that there is a Low Level receiver output which is
configured for unbalanced 300 ohm lines that I could hook to, but it is
used to feed a Pactor high frequency modem. Connecting (Y connection)
a line to this causes a degradation of the signal to the modem which
makes this an unusable option. So please, don't pursue this as an
option.

Any ideas? Someone suggested a 10K ohn resistor on the output of the
SSB, but before I try to track one of those down, I thought that I'd
ask here.



Any long connections are usually best made through an isolation
transformer. You didn't describe the noise. Engine? Alternator?
Constant?
If the 10K does nothing, try a 10K on both leads. IA .005 uF cap across
the output of the 10K's might help.

greg

"GeoffSchultz" wrote in message
ups.com...
This is a 40' sailboat and per my last reply it's a mixed 12V/120V
system (when dealing with the DVD player) but the grounds are tied
together per AYBC standards. The cable from the SSB is shielded but at
this point I'm working the DVD issue while I search for a volume
trim-pot for the SSB output.

-- Geoff


if you pick up one of those little transmitters that send a FM signal from
a mp 3 player to a car stereo it might safe you the trouble od running wire
and dealing with ground loops and hum and noise.

just stick the transmitter on the SSB audio out and tune it in on the
already installed system. (or walkman / portable)

I got the SSB working just fine using a 10K resistor. Now the question
is why the DVD output just creates a buzz. Should this work?

-- Geoff

P.S. I have no idea where I'd get "one of those little transmitters
that sends a FM signal..." in Honduras! Good idea, but not down here.

"GeoffSchultz" wrote in message
ups.com...
I got the SSB working just fine using a 10K resistor. Now the question
is why the DVD output just creates a buzz. Should this work?

-- Geoff

P.S. I have no idea where I'd get "one of those little transmitters
that sends a FM signal..." in Honduras! Good idea, but not down here.


try an extra ground wire from DVD to amp. could be the cable is bad.