Help Please - Seavoice RT660 VHF : Handset Plug Wiring
 

Could anyone in the group advise on the pin-out wiring for the main handset
to the Seavoice RT660 vhf radio? It's a telephone type handset with mike,
earpiece and PTT combined.

6 wires (2 red on PTT, 2 black on mouthpiece/mic and 2 white to the
earpiece/phone speaker) Could be simple, but the 6 wires run to a 5 pin
plug, so at least 1 pair will be commoned, I presume. Trial and error could
run it down, but I may fry the rig in that process.

Any help on which colours to connect to which pins on the plug would be
greatly appreciated. Also any advice on how best to solder this lot as the
pins are tiny, the multicore wires are very thin and the insulating sleeves
melt with the soldering iron a meter away!

Constructive comments/help greatly appreciated please....Keith

Help Please - Seavoice RT660 VHF : Handset Plug Wiring
 

On Mon, 5 Jan 2004 22:55:01 -0000, "k"
wrote:

Could anyone in the group advise on the pin-out wiring for the main handset
to the Seavoice RT660 vhf radio? It's a telephone type handset with mike,
earpiece and PTT combined.

6 wires (2 red on PTT, 2 black on mouthpiece/mic and 2 white to the
earpiece/phone speaker) Could be simple, but the 6 wires run to a 5 pin
plug, so at least 1 pair will be commoned, I presume. Trial and error could
run it down, but I may fry the rig in that process.

Any help on which colours to connect to which pins on the plug would be
greatly appreciated. Also any advice on how best to solder this lot as the
pins are tiny, the multicore wires are very thin and the insulating sleeves
melt with the soldering iron a meter away!

Constructive comments/help greatly appreciated please....Keith

Sorry cannot help with pin outs (wot goes where). How did you get to
point where plug is separate from lead with no indication of what
wires went where?
As a general statements when soldering to small plugs.
1 strip and each wire back about 5mm
2 If two wires go to one pin twist them together
3 Tin each wire. Use a temp controlled soldering iron if possible.
50wat temp controlled far better than a cheap 15w non controlled.
4 cut off each wire so that 1-2 mm of tinned uninsulated wire shows
5 assemble connector hood components onto cable
6 place sleeve over each wire. wires should be as long as possible but
still allow hood to cover. Some bunching of wires under hood when
assembled is possible.
7 Get hold of a mating socket to the plug. Clamp socket in a vice,
insert plug to socket. You now have a solid work area with the socket
acting as a heat sink and retaining the alignment of the plug pins.
8 Using a fine tip bit, tin each pin solder bucket
9 Solder each wire to the appropriate pin. With tinned well and tinned
wires it will take a second or so each. Work from inside pins to
outside.
10 Inspect and ensure all ok
11 Slide sleeves down wires
12 Hot air to shrink if heat shrink sleeves.
13 Fit shroud
14 Plug into R/T
15 Test
16 Go boating

Richard

Nb "Pound Eater" Parkend G+S

Help Please - Seavoice RT660 VHF : Handset Plug Wiring
 

Thanks Richard.....


"Richard Edwards" wrote in message
...
On Mon, 5 Jan 2004 22:55:01 -0000, "k"
wrote:

Could anyone in the group advise on the pin-out wiring for the main
handset
to the Seavoice RT660 vhf radio? It's a telephone type handset with mike,
earpiece and PTT combined.

6 wires (2 red on PTT, 2 black on mouthpiece/mic and 2 white to the
earpiece/phone speaker) Could be simple, but the 6 wires run to a 5 pin
plug, so at least 1 pair will be commoned, I presume. Trial and error
could
run it down, but I may fry the rig in that process.

Any help on which colours to connect to which pins on the plug would be
greatly appreciated. Also any advice on how best to solder this lot as
the
pins are tiny, the multicore wires are very thin and the insulating
sleeves
melt with the soldering iron a meter away!

Constructive comments/help greatly appreciated please....Keith

Sorry cannot help with pin outs (wot goes where). How did you get to
point where plug is separate from lead with no indication of what
wires went where?

Well, your right, I should have taken more care when I desoldered the partly
damaged assembly. I took a note of the pin-out, but have misplaced it...The
difficulty in working by trial and error is that if the TX relay is
triggered without the RX side of the TCVR being isolated (like the PTT
switch does), then the whole RX side of the set can just get fried (I
think!)

As a general statements when soldering to small plugs.
1 strip and each wire back about 5mm
2 If two wires go to one pin twist them together
3 Tin each wire. Use a temp controlled soldering iron if possible.
50wat temp controlled far better than a cheap 15w non controlled.
4 cut off each wire so that 1-2 mm of tinned uninsulated wire shows
5 assemble connector hood components onto cable
6 place sleeve over each wire. wires should be as long as possible but
still allow hood to cover. Some bunching of wires under hood when
assembled is possible.
7 Get hold of a mating socket to the plug. Clamp socket in a vice,
insert plug to socket. You now have a solid work area with the socket
acting as a heat sink and retaining the alignment of the plug pins.
8 Using a fine tip bit, tin each pin solder bucket

We're on the same wavelength to this point. - the difficulty seems to be
that the 6 signal wires in the mutlicore lead are very fine copper spiral
wound along what appears to be a soft plastic core which melts when the
copper outer spiral is heated. Very flexible, but almost impossible to 'tin'
before making the join. I think this multicore is some kind of P.O. spec
cable and someone has suggested it's designed for srimp connecting, not
soldering. I can't see how I could crimp up such fine wires into tiny pins
on the plug. Brain surgery would be easier! Maybe easier to replace the
whole curly lead with less flexible plain copper wire multi?


9 Solder each wire to the appropriate pin. With tinned well and tinned
wires it will take a second or so each. Work from inside pins to
outside.
10 Inspect and ensure all ok
11 Slide sleeves down wires
12 Hot air to shrink if heat shrink sleeves.
13 Fit shroud
14 Plug into R/T
15 Test

I'll be happy to get here by the spring and boating by the summer!

16 Go boating

Richard

Nb "Pound Eater" Parkend G+S

Many thanks for your detailed guidance.

Cheers.....keith

Help Please - Seavoice RT660 VHF : Handset Plug Wiring
 

On Wed, 7 Jan 2004 00:53:21 -0000, "k"
wrote:

snip
We're on the same wavelength to this point. - the difficulty seems to be
that the 6 signal wires in the mutlicore lead are very fine copper spiral
wound along what appears to be a soft plastic core which melts when the
copper outer spiral is heated. Very flexible, but almost impossible to 'tin'
before making the join. I think this multicore is some kind of P.O. spec
cable and someone has suggested it's designed for srimp connecting, not
soldering. I can't see how I could crimp up such fine wires into tiny pins
on the plug. Brain surgery would be easier! Maybe easier to replace the
whole curly lead with less flexible plain copper wire multi?
snip
I assume from the above that each wire comprises a centre plastic core
with copper in a spiral around it then an outer sheath.
Sounds a right pain!
If it was solder before then you can do it again! If it was crimped
then best option is a new lead.
If above not possible then cut out the inner plastic before twisting
and tinning. Problem is strands are probably relatively springy and
will not like being twisted. Best bet is strip 6-10mm before twisting
then cut back after tinning. Are you sure inner plastic is just
plastic and not a core with the copper as a screen?
The whole of the above is academic if you do not know which pin is
which!!!!!!

The very best of luck.

Richard

Nb "Pound Eater" Parkend G+S

Help Please - Seavoice RT660 VHF : Handset Plug Wiring
 

In article , Richard
Edwards wrote:
The whole of the above is academic if you do not know which pin is
which!!!!!!

Most radio amateurs/cb enthusiasts will be able to do this kind of
repair with their eyes shut or will have a box of mics. for you to
try. I think I've got a manual for your set in the shop but I've
just had a new hip and am not mobile yet. If you still need help at
the beginning of February email me.

--
A T (Sandy) Morton
on the Bicycle Island
In the Global Village
http://www.sandymillport.fsnet.co.uk

Help Please - Seavoice RT660 VHF : Handset Plug Wiring
 

Many thanks for that Sandy. I'm sure that you (and Richard) are absolutely
correct with your advice and suggestions. Of course, I could just take the
whole lot to one of our local marine electronics people (I'm located near
Oban and there are a few based there), but I have a stubborn streak in
me..... I may e-mail you in February and take up your offer to check out the
manual for the pin-out configuration.

good luck.....Keith
"Sandy Morton" wrote in message
...
In article , Richard
Edwards wrote:
The whole of the above is academic if you do not know which pin is
which!!!!!!

Most radio amateurs/cb enthusiasts will be able to do this kind of
repair with their eyes shut or will have a box of mics. for you to
try. I think I've got a manual for your set in the shop but I've
just had a new hip and am not mobile yet. If you still need help at
the beginning of February email me.

--
A T (Sandy) Morton
on the Bicycle Island
In the Global Village
http://www.sandymillport.fsnet.co.uk

Help Please - Seavoice RT660 VHF : Handset Plug Wiring
 

Thanks again Richard.....

"Richard Edwards" wrote in message
...
On Wed, 7 Jan 2004 00:53:21 -0000, "k"
wrote:

snip
We're on the same wavelength to this point. - the difficulty seems to be
that the 6 signal wires in the mutlicore lead are very fine copper spiral
wound along what appears to be a soft plastic core which melts when the
copper outer spiral is heated. Very flexible, but almost impossible to
'tin'
before making the join. I think this multicore is some kind of P.O. spec
cable and someone has suggested it's designed for srimp connecting, not
soldering. I can't see how I could crimp up such fine wires into tiny
pins
on the plug. Brain surgery would be easier! Maybe easier to replace the
whole curly lead with less flexible plain copper wire multi?
snip
I assume from the above that each wire comprises a centre plastic core
with copper in a spiral around it then an outer sheath.
Sounds a right pain!
If it was solder before then you can do it again! If it was crimped
then best option is a new lead.
If above not possible then cut out the inner plastic before twisting
and tinning. Problem is strands are probably relatively springy and
will not like being twisted. Best bet is strip 6-10mm before twisting
then cut back after tinning. Are you sure inner plastic is just
plastic and not a core with the copper as a screen?

That sounds sensible. I'll have to get the illuminated bench magnifier fired
up and disect the multicore properly with a sharp scalpel to determine if
the cu spiral is the conductor or a screen.

The whole of the above is academic if you do not know which pin is
which!!!!!!

May have a lead on the pin-out from Sandy Morton below....

The very best of luck.

Richard

Nb "Pound Eater" Parkend G+S

Thanks again guys....Keith

Help Please - Seavoice RT660 VHF : Handset Plug Wiring
 

Keith

I've got the Repair Manual at home, I'll sort out the relavant page, scan it
and send it to you.

Regards,
Brian

"k" wrote in message
...
Could anyone in the group advise on the pin-out wiring for the main
handset
to the Seavoice RT660 vhf radio? It's a telephone type handset with mike,
earpiece and PTT combined.

6 wires (2 red on PTT, 2 black on mouthpiece/mic and 2 white to the
earpiece/phone speaker) Could be simple, but the 6 wires run to a 5 pin
plug, so at least 1 pair will be commoned, I presume. Trial and error
could
run it down, but I may fry the rig in that process.

Any help on which colours to connect to which pins on the plug would be
greatly appreciated. Also any advice on how best to solder this lot as the
pins are tiny, the multicore wires are very thin and the insulating
sleeves
melt with the soldering iron a meter away!

Constructive comments/help greatly appreciated please....Keith

Help Please - Seavoice RT660 VHF : Handset Plug Wiring
 

Brian - many thanks for that kind offer, which will be very greatly
appreciated. Then it's down to my own (limited) skills with the soldering
iron. Cheers....Keith
"BrianR" wrote in message
...
Keith

I've got the Repair Manual at home, I'll sort out the relavant page, scan
it
and send it to you.

Regards,
Brian

"k" wrote in message
...
Could anyone in the group advise on the pin-out wiring for the main
handset
to the Seavoice RT660 vhf radio? It's a telephone type handset with
mike,
earpiece and PTT combined.

6 wires (2 red on PTT, 2 black on mouthpiece/mic and 2 white to the
earpiece/phone speaker) Could be simple, but the 6 wires run to a 5 pin
plug, so at least 1 pair will be commoned, I presume. Trial and error
could
run it down, but I may fry the rig in that process.

Any help on which colours to connect to which pins on the plug would be
greatly appreciated. Also any advice on how best to solder this lot as
the
pins are tiny, the multicore wires are very thin and the insulating
sleeves
melt with the soldering iron a meter away!

Constructive comments/help greatly appreciated please....Keith

Help Please - Seavoice RT660 VHF : Handset Plug Wiring
 

K

I've sent you the Handset wiring diagram by E-mail.

Regards,
Brian

"k" wrote in message
...
Many thanks for that Sandy. I'm sure that you (and Richard) are absolutely
correct with your advice and suggestions. Of course, I could just take the
whole lot to one of our local marine electronics people (I'm located near
Oban and there are a few based there), but I have a stubborn streak in
me..... I may e-mail you in February and take up your offer to check out
the
manual for the pin-out configuration.

good luck.....Keith
"Sandy Morton" wrote in message
...
In article , Richard
Edwards wrote:
The whole of the above is academic if you do not know which pin is
which!!!!!!

Most radio amateurs/cb enthusiasts will be able to do this kind of
repair with their eyes shut or will have a box of mics. for you to
try. I think I've got a manual for your set in the shop but I've
just had a new hip and am not mobile yet. If you still need help at
the beginning of February email me.

--
A T (Sandy) Morton
on the Bicycle Island
In the Global Village
http://www.sandymillport.fsnet.co.uk