Re: [AMRadio] Cabinet for the T-368 exciter?

2009-04-07 Thread Bob Peters
Ohhh Bill I got that one about a month ago...Sorry
to hear that you did not...Better get on the stick
and get it before someone from Mexico comes in and
takes it away from you...They have priority...LOL



-Original Message-
From: amradio-boun...@mailman.qth.net
[mailto:amradio-boun...@mailman.qth.net] On Behalf
Of BILL GUYGER
Sent: Tuesday, April 07, 2009 6:22 PM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] Cabinet for the T-368
exciter?


FWIW, haven't seen mine yet either. Weren't we
also promised a new McMansion with a Lexus hybrid
in the drive way?



- Original Message 
From: Bob Peters 
To: Discussion of AM Radio in the Amateur Service

Sent: Tuesday, April 7, 2009 2:43:11 PM
Subject: Re: [AMRadio] Cabinet for the T-368
exciter?

CHECK CHECK??? What Stimulus check??? You mean
More 9MM amo coming my way???

Bob W1PE

-Original Message-
From: amradio-boun...@mailman.qth.net
[mailto:amradio-boun...@mailman.qth.net] On Behalf
Of BILL GUYGER
Sent: Tuesday, April 07, 2009 1:50 PM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] Cabinet for the T-368
exciter?


Way cool Steve. The president would be happy about
your "greenness". Speaking of him, I think I'll
exact some poetic justice and spend his stimulus
check on some high capacity magazines and ammo for
my AR-15's.

Bill AD5OL





From: "sbjohns...@aol.com" 
To: amradio@mailman.qth.net
Sent: Monday, April 6, 2009 6:20:04 PM
Subject: Re: [AMRadio] Cabinet for the T-368
exciter?


At a local thrift store I found a cabinet for my
T-368 exciter and 
power supply.  It was a two-drawer CD/DVD cabinet
made of plastic and 
masonite, with a lovely black toned wood grain
pattern on the outside.  
After a couple modifications to make it a little
stronger it has turned 
out pretty decent:

http://www.wd8das.net/T368ex.jpg


Steve WD8DAS

sbjohns...@aol.com
http://www.wd8das.net/
--
---
Radio is your best entertainment value.
--
---

__

Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives:
http://www.mail-archive.com/amra...@mailman.qth.ne
t/
List Rules (must read!):
http://w5ami.net/amradiofaq.html
List Home:
http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to
amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list:
http://www.qsl.net/donate.html

__

Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives:
http://www.mail-archive.com/amra...@mailman.qth.ne
t/
List Rules (must read!):
http://w5ami.net/amradiofaq.html
List Home:
http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to
amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list:
http://www.qsl.net/donate.html

__

Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives:
http://www.mail-archive.com/amra...@mailman.qth.ne
t/
List Rules (must read!):
http://w5ami.net/amradiofaq.html
List Home:
http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to
amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list:
http://www.qsl.net/donate.html

__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html


Re: [AMRadio] Cabinet for the T-368 exciter?

2009-04-07 Thread BILL GUYGER

FWIW, haven't seen mine yet either. Weren't we also promised a new McMansion 
with a Lexus hybrid in the drive way?



- Original Message 
From: Bob Peters 
To: Discussion of AM Radio in the Amateur Service 
Sent: Tuesday, April 7, 2009 2:43:11 PM
Subject: Re: [AMRadio] Cabinet for the T-368 exciter?

CHECK CHECK??? What Stimulus check??? You mean
More 9MM amo coming my way???

Bob W1PE

-Original Message-
From: amradio-boun...@mailman.qth.net
[mailto:amradio-boun...@mailman.qth.net] On Behalf
Of BILL GUYGER
Sent: Tuesday, April 07, 2009 1:50 PM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] Cabinet for the T-368
exciter?


Way cool Steve. The president would be happy about
your "greenness". Speaking of him, I think I'll
exact some poetic justice and spend his stimulus
check on some high capacity magazines and ammo for
my AR-15's.

Bill AD5OL





From: "sbjohns...@aol.com" 
To: amradio@mailman.qth.net
Sent: Monday, April 6, 2009 6:20:04 PM
Subject: Re: [AMRadio] Cabinet for the T-368
exciter?


At a local thrift store I found a cabinet for my
T-368 exciter and 
power supply.  It was a two-drawer CD/DVD cabinet
made of plastic and 
masonite, with a lovely black toned wood grain
pattern on the outside.  
After a couple modifications to make it a little
stronger it has turned 
out pretty decent:

http://www.wd8das.net/T368ex.jpg


Steve WD8DAS

sbjohns...@aol.com
http://www.wd8das.net/
--
---
Radio is your best entertainment value.
--
---

__

Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives:
http://www.mail-archive.com/amra...@mailman.qth.ne
t/
List Rules (must read!):
http://w5ami.net/amradiofaq.html
List Home:
http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to
amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list:
http://www.qsl.net/donate.html

__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html


Re: [AMRadio] Cabinet for the T-368 exciter?

2009-04-07 Thread Bob Peters
CHECK CHECK??? What Stimulus check??? You mean
More 9MM amo coming my way???

Bob W1PE

-Original Message-
From: amradio-boun...@mailman.qth.net
[mailto:amradio-boun...@mailman.qth.net] On Behalf
Of BILL GUYGER
Sent: Tuesday, April 07, 2009 1:50 PM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] Cabinet for the T-368
exciter?


Way cool Steve. The president would be happy about
your "greenness". Speaking of him, I think I'll
exact some poetic justice and spend his stimulus
check on some high capacity magazines and ammo for
my AR-15's.

Bill AD5OL





From: "sbjohns...@aol.com" 
To: amradio@mailman.qth.net
Sent: Monday, April 6, 2009 6:20:04 PM
Subject: Re: [AMRadio] Cabinet for the T-368
exciter?


At a local thrift store I found a cabinet for my
T-368 exciter and 
power supply.  It was a two-drawer CD/DVD cabinet
made of plastic and 
masonite, with a lovely black toned wood grain
pattern on the outside.  
After a couple modifications to make it a little
stronger it has turned 
out pretty decent:

http://www.wd8das.net/T368ex.jpg


Steve WD8DAS

sbjohns...@aol.com
http://www.wd8das.net/
--
---
Radio is your best entertainment value.
--
---

__

Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives:
http://www.mail-archive.com/amra...@mailman.qth.ne
t/
List Rules (must read!):
http://w5ami.net/amradiofaq.html
List Home:
http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to
amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list:
http://www.qsl.net/donate.html

__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html


Re: [AMRadio] Cabinet for the T-368 exciter?

2009-04-07 Thread BILL GUYGER

Way cool Steve. The president would be happy about your "greenness". Speaking 
of him, I think I'll exact some poetic justice and spend his stimulus check 
on some high capacity magazines and ammo for my AR-15's.

Bill AD5OL





From: "sbjohns...@aol.com" 
To: amradio@mailman.qth.net
Sent: Monday, April 6, 2009 6:20:04 PM
Subject: Re: [AMRadio] Cabinet for the T-368 exciter?


At a local thrift store I found a cabinet for my T-368 exciter and 
power supply.  It was a two-drawer CD/DVD cabinet made of plastic and 
masonite, with a lovely black toned wood grain pattern on the outside.  
After a couple modifications to make it a little stronger it has turned 
out pretty decent:

http://www.wd8das.net/T368ex.jpg


Steve WD8DAS

sbjohns...@aol.com
http://www.wd8das.net/
-
Radio is your best entertainment value.
-

__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html


Re: [AMRadio] Cabinet for the T-368 exciter?

2009-04-07 Thread VJB

SWEET job there, Steve !!!

If you really want to flip some people out, buy yerself one of the winged 
Collins lapel/name badge pins that I've seen advertised in ER, and slap it on 
the front panel.

It'll provide the best $8 of entertainment you can imagine, especially if you 
post (somewhere besides here) that you just bought a "Rare Collins Exciter" off 
ebay for $6750 or whatever.

--Paul/VJB




  
__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html


Re: [AMRadio] Cabinet for the T-368 exciter?

2009-04-06 Thread Brett Gazdzinski
Looks great!

Brett

- Original Message - 
From: 
To: 
Sent: Monday, April 06, 2009 7:20 PM
Subject: Re: [AMRadio] Cabinet for the T-368 exciter?


> 
> At a local thrift store I found a cabinet for my T-368 exciter and 
> power supply.  It was a two-drawer CD/DVD cabinet made of plastic and 
> masonite, with a lovely black toned wood grain pattern on the outside.  
> After a couple modifications to make it a little stronger it has turned 
> out pretty decent:
> 
> http://www.wd8das.net/T368ex.jpg
> 
> 
> Steve WD8DAS
> 
> sbjohns...@aol.com
> http://www.wd8das.net/
> -
> Radio is your best entertainment value.
> -
> 
> 
> -Original Message-
> From: D. Chester 
> To: amradio@mailman.qth.net
> Sent: Wed, 25 Mar 2009 3:35 pm
> Subject: Re: [AMRadio] Cabinet for the T-368 exciter?
> 
> Probably the best bet is to make one.  I modified one and use it as my
> station VFO, capable of driving any of my rigs.
> 
> I still found the drift objectionable when the PTO is turned off during
> stand-by, particularly when working 40m CW, so I modified mine to let 
> the
> oscillator run all the time even when the rest of the unit is turned 
> off.
> The problem with doing that is that the oscillator is audible in the
> receiver, which can be a problem with weak signals when  the band is 
> quiet.
> I built a metal shielded enclosure to encase the  whole thing, PTO,
> buffer/multiplier unit and all.  I used about 1/16" sheet aluminium and 
> some
> 1/4" square rods of aluminium stock salvaged from something long 
> forgotten.
> I cut side and top panels, using the original bottom cover, rear panel 
> and
> front sub-panel behind the mechanical dial assembly.  I carefully 
> drilled
> and tapped holes for 4-40 screws, using the square stock as a skeleton 
> to
> hold the sheet metal panels together at the corners.  The front and 
> rear
> sub-panels in the unit are thick enough that I was able to drill and 
> tap
> directly into the edges, without the square stock.  I used standard 
> circuits
> for TVI filtering and bypassing for all power supply, filament and 
> control
> leads going in and out of the unit, except that the inductances and
> capacitances were optimised for the 1.5-20 mHz range instead of for 
> VHF.  I
> was able to reduce the rf feed-through to the  receiver to negligible 
> with
> the receiving antenna connected, although it is faintly audible when 
> the
> antenna is removed from the receiver.
> 
> I  replaced the type 6000 tube with a 6AG7.  I had to re-wire the octal 
> tube
> socket, but the capacitances of the two tubes are nearly the same.  I 
> put
> only about 150 volts on the 6AG7, and that gives me about 200-250 
> milliwatts
> of power out, which is comparable to the output from a ham type VFO 
> like the
> Johnson 122 or Heathkit VF-1.
> 
> The next problem was coupling the output to the transmitters.  In the
> original T-368 setup, a short length of coax is used to directly couple 
> the
> plate of  the output  to the grid of the final amplifier, and its
> capacitance was not enough to cause a problem with resonance at the 
> output
> coil. Some of my rigs are as far as 10' away from the operating table, 
> and
> that much coax loads down the output circuit with too much capacitance, 
> and
> the alignment parameters changed with different lengths of coax to the
> different  rigs.  So I decided to make mine  link  coupled.  I salvaged 
> a
> spare bandswitch wafer from a T-195 multiplier/buffer unit I had on 
> hand,
> which is very similar to the one in the T-368.  I disassemble the
> bandswitch, cut two of the hollow tubes used as spacers between wafers 
> to
> accomodate the additional wafer, and re-assembled the bandswitch.  I 
> then
> took out the output coils and removed the shields, then wound a 
> coupling
> coil over the cold end of each coil and brought the new  lead out the 
> bottom
> of the  coil.  I don't recall if there was already an extra banana plug 
> at
> the coil bases, or if I added one or simply brought the wire out 
> through a
> hole (I made these mods about 20 years ago).  The new wafer section was 
> used
> to select the coupling coil.  As I recall, I used about 2 turns for the
> highest frequency coil, 4 for the next, 8 for the 3-6 mHz coil and 16 
> for
> the 1.6-3 mHz coil.  I removed the original BNC connector and relay at 
> the
> top of the buffer assembly, and relocated the BNC to the rear of the 
> unit as
> the output jack.  With the modified output, I can get about 1/4 wa

Re: [AMRadio] Cabinet for the T-368 exciter?

2009-04-06 Thread sbjohnston

At a local thrift store I found a cabinet for my T-368 exciter and 
power supply.  It was a two-drawer CD/DVD cabinet made of plastic and 
masonite, with a lovely black toned wood grain pattern on the outside.  
After a couple modifications to make it a little stronger it has turned 
out pretty decent:

http://www.wd8das.net/T368ex.jpg


Steve WD8DAS

sbjohns...@aol.com
http://www.wd8das.net/
-
Radio is your best entertainment value.
-


-Original Message-
From: D. Chester 
To: amradio@mailman.qth.net
Sent: Wed, 25 Mar 2009 3:35 pm
Subject: Re: [AMRadio] Cabinet for the T-368 exciter?

Probably the best bet is to make one.  I modified one and use it as my
station VFO, capable of driving any of my rigs.

I still found the drift objectionable when the PTO is turned off during
stand-by, particularly when working 40m CW, so I modified mine to let 
the
oscillator run all the time even when the rest of the unit is turned 
off.
The problem with doing that is that the oscillator is audible in the
receiver, which can be a problem with weak signals when  the band is 
quiet.
I built a metal shielded enclosure to encase the  whole thing, PTO,
buffer/multiplier unit and all.  I used about 1/16" sheet aluminium and 
some
1/4" square rods of aluminium stock salvaged from something long 
forgotten.
I cut side and top panels, using the original bottom cover, rear panel 
and
front sub-panel behind the mechanical dial assembly.  I carefully 
drilled
and tapped holes for 4-40 screws, using the square stock as a skeleton 
to
hold the sheet metal panels together at the corners.  The front and 
rear
sub-panels in the unit are thick enough that I was able to drill and 
tap
directly into the edges, without the square stock.  I used standard 
circuits
for TVI filtering and bypassing for all power supply, filament and 
control
leads going in and out of the unit, except that the inductances and
capacitances were optimised for the 1.5-20 mHz range instead of for 
VHF.  I
was able to reduce the rf feed-through to the  receiver to negligible 
with
the receiving antenna connected, although it is faintly audible when 
the
antenna is removed from the receiver.

I  replaced the type 6000 tube with a 6AG7.  I had to re-wire the octal 
tube
socket, but the capacitances of the two tubes are nearly the same.  I 
put
only about 150 volts on the 6AG7, and that gives me about 200-250 
milliwatts
of power out, which is comparable to the output from a ham type VFO 
like the
Johnson 122 or Heathkit VF-1.

The next problem was coupling the output to the transmitters.  In the
original T-368 setup, a short length of coax is used to directly couple 
the
plate of  the output  to the grid of the final amplifier, and its
capacitance was not enough to cause a problem with resonance at the 
output
coil. Some of my rigs are as far as 10' away from the operating table, 
and
that much coax loads down the output circuit with too much capacitance, 
and
the alignment parameters changed with different lengths of coax to the
different  rigs.  So I decided to make mine  link  coupled.  I salvaged 
a
spare bandswitch wafer from a T-195 multiplier/buffer unit I had on 
hand,
which is very similar to the one in the T-368.  I disassemble the
bandswitch, cut two of the hollow tubes used as spacers between wafers 
to
accomodate the additional wafer, and re-assembled the bandswitch.  I 
then
took out the output coils and removed the shields, then wound a 
coupling
coil over the cold end of each coil and brought the new  lead out the 
bottom
of the  coil.  I don't recall if there was already an extra banana plug 
at
the coil bases, or if I added one or simply brought the wire out 
through a
hole (I made these mods about 20 years ago).  The new wafer section was 
used
to select the coupling coil.  As I recall, I used about 2 turns for the
highest frequency coil, 4 for the next, 8 for the 3-6 mHz coil and 16 
for
the 1.6-3 mHz coil.  I removed the original BNC connector and relay at 
the
top of the buffer assembly, and relocated the BNC to the rear of the 
unit as
the output jack.  With the modified output, I can get about 1/4 watt of 
rf
into a 50-ohm dummy load.

Before the mod, the unit would track perfectly over each one of the 
tuning
ranges.  I was amazed that I could put an RF voltmeter at the output 
and it
would show a constant reading no matter what band or frequency I tuned 
it
to.  Adding the coupling links somewhat screwed up the linearity, and I
could never get the ranges to track as well as they did before the
modification.  I possibly could have experimented with  the exact 
number of
turns of coupling coil on each output coil, and been able to get the 
unit to
track perfectly over each frequency range, but I didn't go to the 
trouble,
since I use each frequency output range of the unit for only one ham 
band:
1.5-3 

Re: [AMRadio] Cabinet for the T-368 exciter?

2009-03-25 Thread D. Chester
Probably the best bet is to make one.  I modified one and use it as my 
station VFO, capable of driving any of my rigs.

I still found the drift objectionable when the PTO is turned off during 
stand-by, particularly when working 40m CW, so I modified mine to let the 
oscillator run all the time even when the rest of the unit is turned off. 
The problem with doing that is that the oscillator is audible in the 
receiver, which can be a problem with weak signals when  the band is quiet. 
I built a metal shielded enclosure to encase the  whole thing, PTO, 
buffer/multiplier unit and all.  I used about 1/16" sheet aluminium and some 
1/4" square rods of aluminium stock salvaged from something long forgotten. 
I cut side and top panels, using the original bottom cover, rear panel and 
front sub-panel behind the mechanical dial assembly.  I carefully drilled 
and tapped holes for 4-40 screws, using the square stock as a skeleton to 
hold the sheet metal panels together at the corners.  The front and rear 
sub-panels in the unit are thick enough that I was able to drill and tap 
directly into the edges, without the square stock.  I used standard circuits 
for TVI filtering and bypassing for all power supply, filament and control 
leads going in and out of the unit, except that the inductances and 
capacitances were optimised for the 1.5-20 mHz range instead of for VHF.  I 
was able to reduce the rf feed-through to the  receiver to negligible with 
the receiving antenna connected, although it is faintly audible when the 
antenna is removed from the receiver.

I  replaced the type 6000 tube with a 6AG7.  I had to re-wire the octal tube 
socket, but the capacitances of the two tubes are nearly the same.  I put 
only about 150 volts on the 6AG7, and that gives me about 200-250 milliwatts 
of power out, which is comparable to the output from a ham type VFO like the 
Johnson 122 or Heathkit VF-1.

The next problem was coupling the output to the transmitters.  In the 
original T-368 setup, a short length of coax is used to directly couple the 
plate of  the output  to the grid of the final amplifier, and its 
capacitance was not enough to cause a problem with resonance at the output 
coil. Some of my rigs are as far as 10' away from the operating table, and 
that much coax loads down the output circuit with too much capacitance, and 
the alignment parameters changed with different lengths of coax to the 
different  rigs.  So I decided to make mine  link  coupled.  I salvaged a 
spare bandswitch wafer from a T-195 multiplier/buffer unit I had on hand, 
which is very similar to the one in the T-368.  I disassemble the 
bandswitch, cut two of the hollow tubes used as spacers between wafers to 
accomodate the additional wafer, and re-assembled the bandswitch.  I then 
took out the output coils and removed the shields, then wound a coupling 
coil over the cold end of each coil and brought the new  lead out the bottom 
of the  coil.  I don't recall if there was already an extra banana plug at 
the coil bases, or if I added one or simply brought the wire out through a 
hole (I made these mods about 20 years ago).  The new wafer section was used 
to select the coupling coil.  As I recall, I used about 2 turns for the 
highest frequency coil, 4 for the next, 8 for the 3-6 mHz coil and 16 for 
the 1.6-3 mHz coil.  I removed the original BNC connector and relay at the 
top of the buffer assembly, and relocated the BNC to the rear of the unit as 
the output jack.  With the modified output, I can get about 1/4 watt of rf 
into a 50-ohm dummy load.

Before the mod, the unit would track perfectly over each one of the tuning 
ranges.  I was amazed that I could put an RF voltmeter at the output and it 
would show a constant reading no matter what band or frequency I tuned it 
to.  Adding the coupling links somewhat screwed up the linearity, and I 
could never get the ranges to track as well as they did before the 
modification.  I possibly could have experimented with  the exact number of 
turns of coupling coil on each output coil, and been able to get the unit to 
track perfectly over each frequency range, but I didn't go to the trouble, 
since I use each frequency output range of the unit for only one ham band: 
1.5-3 for 160, 3-6 for 75/80, 6-12 for 40m, and 12-20 for 20m.I found 
that I could align the output coils well enough that the unit would still 
track perfectly across the entire ham band in each frequency range, but the 
output would fall off at the extreme ends.  Since I don't do pirate 
broadcasting on shortwave and have no use for frequencies outside  the ham 
bands, the tracking error made zero difference to me, so I didn't bother. I 
haven't tried using it on 30m or 17m, but hopefully I would still be able to 
get enough output on those bands to drive whatever transmitter I might use.

The final modification was to add a Jackson Brothers planetary dial drive to 
the tuning knob, because the stock tuning rate was to

Re: [AMRadio] Cabinet for the T-368 exciter?

2009-03-23 Thread Sara & Wayne Steiner
Steve
I put mine behind a 19"x8.75" rack panel and had plenty of room for a pwr 
sup. But I guess this is not a cabinet.

Wayne, N0TE
- Original Message - 
From: 
To: 
Sent: Monday, March 23, 2009 11:42 AM
Subject: [AMRadio] Cabinet for the T-368 exciter?


>
> I'd like to find or make a cabinet of some kind to house my T-368
> exciter deck which I use as a VFO.  So far I've not come up with
> anything, either for the exciter alone or with some extra space to
> build a power supply into.  Anyone have any suggestions?
>
> Basic dimensions of the chassis are about 6 inches tall, by 10 inches
> wide, by 12 inches deep.
>
> Thanks...
>
> Steve WD8DAS
>
> sbjohns...@aol.com
> http://www.wd8das.net/
> -
> Radio is your best entertainment value.
> -
> __
> Our Main Website: http://www.amfone.net
> AMRadio mailing list
> Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
> List Rules (must read!): http://w5ami.net/amradiofaq.html
> List Home: http://mailman.qth.net/mailman/listinfo/amradio
> Post: AMRadio@mailman.qth.net
> To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
> the word unsubscribe in the message body.
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> 


__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html


Re: [AMRadio] Cabinet for the T-368 exciter?

2009-03-23 Thread sbjohnston

>I wound up mounting it on one side of a rack panel, and the power 
supply on the other side.

That's a real good idea.  But I'm wanting to put it in a box of some 
kind, as I tend to use it for driving all sorts of different rigs, and 
it would be nice to have a self-contained desktop package.

Maybe I'll try and make something out of wood.

Steve WD8DAS

sbjohns...@aol.com
http://www.wd8das.net/
-
Radio is your best entertainment value.
-


-Original Message-
From: Thomas Adams 
To: Discussion of AM Radio in the Amateur Service 
; amradio@mailman.qth.net
Sent: Mon, 23 Mar 2009 8:21 pm
Subject: Re: [AMRadio] Cabinet for the T-368 exciter?










At 12:42 PM 3/23/2009, sbjohns...@aol.com wrote:

>I'd like to find or make a cabinet of some kind to house my T-368
>exciter deck which I use as a VFO.  So far I've not come up with
>anything, either for the exciter alone or with some extra space to
>build a power supply into.  Anyone have any suggestions?
>
>Basic dimensions of the chassis are about 6 inches tall, by 10 inches
>wide, by 12 inches deep.
>
>Thanks...
>
>Steve WD8DAS
>
>sbjohns...@aol.com
>http://www.wd8das.net/

Howdy, Steve!

Housing those critters is a definite problem to deal with; on mine, I
wound up mounting it
on one side of a rack panel, and the power supply on the other side.


Mr. T. W9LBB


__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: 
http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html





__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html


Re: [AMRadio] Cabinet for the T-368 exciter?

2009-03-23 Thread Thomas Adams
At 12:42 PM 3/23/2009, sbjohns...@aol.com wrote:

>I'd like to find or make a cabinet of some kind to house my T-368
>exciter deck which I use as a VFO.  So far I've not come up with
>anything, either for the exciter alone or with some extra space to
>build a power supply into.  Anyone have any suggestions?
>
>Basic dimensions of the chassis are about 6 inches tall, by 10 inches
>wide, by 12 inches deep.
>
>Thanks...
>
>Steve WD8DAS
>
>sbjohns...@aol.com
>http://www.wd8das.net/

Howdy, Steve!

Housing those critters is a definite problem to deal with; on mine, I 
wound up mounting it
on one side of a rack panel, and the power supply on the other side.


Mr. T. W9LBB


__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html


[AMRadio] Cabinet for the T-368 exciter?

2009-03-23 Thread sbjohnston

I'd like to find or make a cabinet of some kind to house my T-368 
exciter deck which I use as a VFO.  So far I've not come up with 
anything, either for the exciter alone or with some extra space to 
build a power supply into.  Anyone have any suggestions?

Basic dimensions of the chassis are about 6 inches tall, by 10 inches 
wide, by 12 inches deep.

Thanks...

Steve WD8DAS

sbjohns...@aol.com
http://www.wd8das.net/
-
Radio is your best entertainment value.
-
__
Our Main Website: http://www.amfone.net
AMRadio mailing list
Searchable Archives: http://www.mail-archive.com/amradio@mailman.qth.net/
List Rules (must read!): http://w5ami.net/amradiofaq.html
List Home: http://mailman.qth.net/mailman/listinfo/amradio
Post: AMRadio@mailman.qth.net
To unsubscribe, send an email to amradio-requ...@mailman.qth.net with
the word unsubscribe in the message body.

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html