On a Johnson Ranger I :
With a relay added for antenna change over, what additional components
are required ?
How does it operate ? Wiring req'd. ? I have always used separate
antennas for TX & RX and have no idea operating details.

Edward wrote:
On a Johnson Ranger I :
With a relay added for antenna change over, what additional components
are required ?
How does it operate ? Wiring req'd. ? I have always used separate
antennas for TX & RX and have no idea operating details.


Hi, Edward

The antenna relay output jack on the back of the Ranger
has 115vac across the contacts when the Ranger is in c.w. mode,
or a.m. mode. The voltage is not present in standby mode.
If your Ranger has the optional internal
push-to-talk relay modification added,
then the 115vac for the antenna relay will appear
in c.w. mode (at all times) or in a.m.
mode only when the microphone push to talk button is pressed.

You connect the Ranger's antenna relay output jack
to the 115vac coil of a coaxial relay. On a Dow-Key coax relay,
the coil connections are the two small pins on the metal cylinder.

The coax from the transmitter rf output
goes to the female coax jack opposite the coil of the Dow-Key coax relay.
The receiver coax goes to the female coax connection next
to the coil. The antenna coax goes to the female coax connection
at the end of the coax relay.

If your coax relay includes "auxillary" contacts opposite
the coil, they can be used to mute your receiver.
If your coax relay doesn't have auxillary contacts,
you can wire another, cheap relay's 115vac coil across the
coax relay coil, and use the contacts of the cheap relay
to do the muting function.

Some receivers are muted by opening a lead, some by closing a lead
to ground.

73,
Ed Knobloch

Thanks, Edward-
Thanks, Edward-
Now I have to figure out what the relay mounted on ledge with the two
small tubs is intended to do. I have problems tracing sets with no
documents for revisions.

On Fri, 11 Mar 2005 22:30:38 GMT, Edward Knobloch
wrote:

Edward wrote:
On a Johnson Ranger I :
With a relay added for antenna change over, what additional components
are required ?
How does it operate ? Wiring req'd. ? I have always used separate
antennas for TX & RX and have no idea operating details.


Hi, Edward

The antenna relay output jack on the back of the Ranger
has 115vac across the contacts when the Ranger is in c.w. mode,
or a.m. mode. The voltage is not present in standby mode.
If your Ranger has the optional internal
push-to-talk relay modification added,
then the 115vac for the antenna relay will appear
in c.w. mode (at all times) or in a.m.
mode only when the microphone push to talk button is pressed.

You connect the Ranger's antenna relay output jack
to the 115vac coil of a coaxial relay. On a Dow-Key coax relay,
the coil connections are the two small pins on the metal cylinder.

The coax from the transmitter rf output
goes to the female coax jack opposite the coil of the Dow-Key coax relay.
The receiver coax goes to the female coax connection next
to the coil. The antenna coax goes to the female coax connection
at the end of the coax relay.

If your coax relay includes "auxillary" contacts opposite
the coil, they can be used to mute your receiver.
If your coax relay doesn't have auxillary contacts,
you can wire another, cheap relay's 115vac coil across the
coax relay coil, and use the contacts of the cheap relay
to do the muting function.

Some receivers are muted by opening a lead, some by closing a lead
to ground.

73,
Ed Knobloch

Edward wrote:
Thanks, Ed-
Now I have to figure out what the relay mounted on ledge with the two
small tubs is intended to do. I have problems tracing sets with no
documents for revisions.


A relay mounted on the shelf near the mode switch
is the recommended (by Johnson) location for a push to talk relay.
I'm pretty sure the mod appeared in later editions of the Ranger manual,
and it appears on pages 18 and 19 of the Ranger II operating
manual. The recommended Ranger II version
uses a double-pole-double-throw relay,
one pole for controlling the rf stages in a.m. mode,
and one pole for switching the antenna relay control
voltage at the rear panel jack.

Since your Ranger has a push to talk (PTT) relay, it should have
two connections plus ground at the mic jack.
Grounding one of the mic jack connections, while the rig
is in a.m. mode, should cause the relay to pull in,
and the rig to transmit.

My Ranger II has a nice addition:
A previous owner used 4 pole PTT relay, and he used
the extra two poles to switch the screen voltage
to the modulator tubes, and to control the red
indicator lamp on the Ranger II.
By opening the screen supply to the modulator tubes
in standby, the modulator tubes draw no current.
The tubes last longer, and there is less heat in the cabinet.
In fact, my Ranger II has the original
Johnson-labeled modulator tubes.

You can get a Ranger II Owner's manual, showing the PTT mod,
at http://bama.sbc.edu
This site is mirrored at http://bama.edebris.com/manuals/


Regards,
Ed Knobloch

Thanks, Ed-
I should have told you it is a Ranger I.
The mic connection on chassis has only one center input. Base on this
it is not a PPT relay per your explanation of requiring two
connections. I also have no ac terminals on back of set for any relay.
The relay does look like it is a double-pole double- throw.
This set apparently has a lot of other mods based on tracing some of
the wiring when I replaced all the caps.
When I first tried to load into a 5o watt light bulb, it blew the
fuse. It has been over 20 years since I loaded a tube transmitter. hi
hi I changes fuse and tried again. It does not seem to load. The
relay does click when I change from stand-by to fone or to cw.
I used my key and sent some code and can hear faint clean cw signals
on my Sony Sw RX set when tuned to the sending freq.
There is no sound when I put on tune position during tune up.

Does any of this give you any clews as to where I should look for the
problem.
I should also point out the relay and meter sometime do absolutely
nothing. I suspect have a short somewhere ??
Ed


On Sat, 12 Mar 2005 23:06:09 GMT, Edward Knobloch
wrote:

Edward wrote:
Thanks, Ed-
Now I have to figure out what the relay mounted on ledge with the two
small tubs is intended to do. I have problems tracing sets with no
documents for revisions.


A relay mounted on the shelf near the mode switch
is the recommended (by Johnson) location for a push to talk relay.
I'm pretty sure the mod appeared in later editions of the Ranger manual,
and it appears on pages 18 and 19 of the Ranger II operating
manual. The recommended Ranger II version
uses a double-pole-double-throw relay,
one pole for controlling the rf stages in a.m. mode,
and one pole for switching the antenna relay control
voltage at the rear panel jack.

Since your Ranger has a push to talk (PTT) relay, it should have
two connections plus ground at the mic jack.
Grounding one of the mic jack connections, while the rig
is in a.m. mode, should cause the relay to pull in,
and the rig to transmit.

My Ranger II has a nice addition:
A previous owner used 4 pole PTT relay, and he used
the extra two poles to switch the screen voltage
to the modulator tubes, and to control the red
indicator lamp on the Ranger II.
By opening the screen supply to the modulator tubes
in standby, the modulator tubes draw no current.
The tubes last longer, and there is less heat in the cabinet.
In fact, my Ranger II has the original
Johnson-labeled modulator tubes.

You can get a Ranger II Owner's manual, showing the PTT mod,
at http://bama.sbc.edu
This site is mirrored at http://bama.edebris.com/manuals/


Regards,
Ed Knobloch

Hi, Edward

It could be that someone changed the mic jack to a single-
conductor type, in order to use
a favorite non-push to talk mic he had on hand.
He could then use the transmitter's mode switch
to go from standby to transmit on a.m.,
as if the PTT relay mod was never done.
This would be easily reversed, should he want to go
back to push to talk - no need for him to remove the relay.

Look at the wiring near the mic jack.
Is there a wire which originated
at the PTT relay coil terminated near the mic jack?
It should be shorted to ground
so the PTT relay will be pulled in on a.m. mode.

The connection for the external antenna relay coil is the small
2 pin ceramic socket right above the a.c. power cord,
at the back of the rig. It looks like a crystal socket
for type HC-6/U crystals.

I referred you to the Ranger II manual because I know it spells
out the push to talk mod. The Ranger II is very similar
to the Ranger, it merely adds another multiplier tube to reach
the 6 meter band, and deletes the old 11 meter band.
(The Ranger II also uses different modulator tubes).

You should go over the manual's tuning procedure carefully.
It is easy to damage the final if you transmit too
long without having the final dipped. It's also possible
to damage the final with too much grid drive.

Look over the mode switch carefully. Are any parts of the
switch damaged? It could be that the previous owner added
the relay to substitute for burned out contacts on the mode
switch (not very likely, though).

73,
Ed Knobloch


Edward wrote:
Thanks, Ed-
I should have told you it is a Ranger I.
The mic connection on chassis has only one center input. Base on this
it is not a PPT relay per your explanation of requiring two
connections. I also have no ac terminals on back of set for any relay.
The relay does look like it is a double-pole double- throw.
This set apparently has a lot of other mods based on tracing some of
the wiring when I replaced all the caps.
When I first tried to load into a 5o watt light bulb, it blew the
fuse. It has been over 20 years since I loaded a tube transmitter. hi
hi I changes fuse and tried again. It does not seem to load. The
relay does click when I change from stand-by to fone or to cw.
I used my key and sent some code and can hear faint clean cw signals
on my Sony Sw RX set when tuned to the sending freq.
There is no sound when I put on tune position during tune up.

Does any of this give you any clews as to where I should look for the
problem.
I should also point out the relay and meter sometime do absolutely
nothing. I suspect have a short somewhere ??
Ed

When I was a Sophmore in High School, and a CB-er, I figured out how to do
this. Get a couple of relays and "git'er done"! Come on !!!


"Edward" wrote in message
...
On a Johnson Ranger I :
With a relay added for antenna change over, what additional components
are required ?
How does it operate ? Wiring req'd. ? I have always used separate
antennas for TX & RX and have no idea operating details.