Hi Dave,

It is unlikely going to be that easy. Usually there are also some
resonant circuits, or at least one, and these frequencies are pretty far
apart.

Here is what we did: I bought a modulator at Radio Shack for about $40.
It's output frequency can be programmed digitally via push button to any
channel in the UHF range. Then video and audio is fed from the VCR into
that modulator. Its RF signal is fed into the house distribution and now
we can watch videos at any TV in the house.

Regards, Joerg

http://www.analogconsultants.com

Not what you want exactly but, take the RF output and put it into another
VCR. Select Channel 5 on that VCR's tuner. It will now take your old units
Channel 5 and put it out on Channel 3 or 4 (switch selectable). Or use the
newer VCR's A/V inputs if the old unit has A/V outputs. You probably have a
VCR or two lying around, so it won't cost you much.

"DaveC" wrote in message
al.net...
This Panasonic NV-2110 3/4-inch VCR outputs RF on CH 5 or CH 6
(switch-selectable). There is no other choice of output channel. (This is
an
(*old* VCR, circa 1973, much discrete circuitry.)

Is the determination of frequency as simple as changing the xtals for
these
channels? (RF mod circuit uses two xtals for these channels.)

If I want change the circuit such that video is output to RF CH 3 or 4, is
this a straightforward xtal swap? Recal required afterward?

Has anyone done this before?

Thanks,
--
DaveC

This is an invalid return address
Please reply in the news group

After reading all the posts so far, the question not asked is 'why use the
RF output at all?'

jak


Kevin Carney wrote:
Not what you want exactly but, take the RF output and put it into
another VCR. Select Channel 5 on that VCR's tuner. It will now take
your old units Channel 5 and put it out on Channel 3 or 4 (switch
selectable). Or use the newer VCR's A/V inputs if the old unit has
A/V outputs. You probably have a VCR or two lying around, so it
won't cost you much.

"DaveC" wrote in message
al.net...
This Panasonic NV-2110 3/4-inch VCR outputs RF on CH 5 or CH 6
(switch-selectable). There is no other choice of output channel.
(This is an (*old* VCR, circa 1973, much discrete circuitry.)

Is the determination of frequency as simple as changing the xtals
for these channels? (RF mod circuit uses two xtals for these
channels.)

If I want change the circuit such that video is output to RF CH 3 or
4, is this a straightforward xtal swap? Recal required afterward?

Has anyone done this before?

Thanks,
--
DaveC

This is an invalid return address
Please reply in the news group

You could also come out of the 3/4 " machine with video and audio.(I
doubt that it will be a stereo output) and put that into the ch 3
modulator and you will have ch 3 out. Lenny Stein, Barlen Electronics.
"Kevin Carney" wrote in message ...
Not what you want exactly but, take the RF output and put it into another
VCR. Select Channel 5 on that VCR's tuner. It will now take your old units
Channel 5 and put it out on Channel 3 or 4 (switch selectable). Or use the
newer VCR's A/V inputs if the old unit has A/V outputs. You probably have a
VCR or two lying around, so it won't cost you much.

"DaveC" wrote in message
al.net...
This Panasonic NV-2110 3/4-inch VCR outputs RF on CH 5 or CH 6
(switch-selectable). There is no other choice of output channel. (This is
an
(*old* VCR, circa 1973, much discrete circuitry.)

Is the determination of frequency as simple as changing the xtals for
these
channels? (RF mod circuit uses two xtals for these channels.)

If I want change the circuit such that video is output to RF CH 3 or 4, is
this a straightforward xtal swap? Recal required afterward?

Has anyone done this before?

Thanks,
--
DaveC

This is an invalid return address
Please reply in the news group

Kevin Carney wrote:

Not what you want exactly but, take the RF output and put it into another
VCR. Select Channel 5 on that VCR's tuner. It will now take your old units
Channel 5 and put it out on Channel 3 or 4 (switch selectable). Or use the
newer VCR's A/V inputs if the old unit has A/V outputs. You probably have a
VCR or two lying around, so it won't cost you much.



That is damn ingenious! You see VCR's lying around for garbage pickup,
so you could get one for nothing.

After reading all the posts so far, the question not asked is 'why use the
RF output at all?'

jak


Kevin Carney wrote:
Not what you want exactly but, take the RF output and put it into
another VCR. Select Channel 5 on that VCR's tuner. It will now take
your old units Channel 5 and put it out on Channel 3 or 4 (switch
selectable). Or use the newer VCR's A/V inputs if the old unit has
A/V outputs. You probably have a VCR or two lying around, so it
won't cost you much.

"DaveC" wrote in message
al.net...
This Panasonic NV-2110 3/4-inch VCR outputs RF on CH 5 or CH 6
(switch-selectable). There is no other choice of output channel.
(This is an (*old* VCR, circa 1973, much discrete circuitry.)

Is the determination of frequency as simple as changing the xtals
for these channels? (RF mod circuit uses two xtals for these
channels.)

If I want change the circuit such that video is output to RF CH 3 or
4, is this a straightforward xtal swap? Recal required afterward?

Has anyone done this before?

Thanks,
--
DaveC

This is an invalid return address
Please reply in the news group

You could also come out of the 3/4 " machine with video and audio.(I
doubt that it will be a stereo output) and put that into the ch 3
modulator and you will have ch 3 out. Lenny Stein, Barlen Electronics.
"Kevin Carney" wrote in message ...
Not what you want exactly but, take the RF output and put it into another
VCR. Select Channel 5 on that VCR's tuner. It will now take your old units
Channel 5 and put it out on Channel 3 or 4 (switch selectable). Or use the
newer VCR's A/V inputs if the old unit has A/V outputs. You probably have a
VCR or two lying around, so it won't cost you much.

"DaveC" wrote in message
al.net...
This Panasonic NV-2110 3/4-inch VCR outputs RF on CH 5 or CH 6
(switch-selectable). There is no other choice of output channel. (This is
an
(*old* VCR, circa 1973, much discrete circuitry.)

Is the determination of frequency as simple as changing the xtals for
these
channels? (RF mod circuit uses two xtals for these channels.)

If I want change the circuit such that video is output to RF CH 3 or 4, is
this a straightforward xtal swap? Recal required afterward?

Has anyone done this before?

Thanks,
--
DaveC

This is an invalid return address
Please reply in the news group

Kevin Carney wrote:

Not what you want exactly but, take the RF output and put it into another
VCR. Select Channel 5 on that VCR's tuner. It will now take your old units
Channel 5 and put it out on Channel 3 or 4 (switch selectable). Or use the
newer VCR's A/V inputs if the old unit has A/V outputs. You probably have a
VCR or two lying around, so it won't cost you much.



That is damn ingenious! You see VCR's lying around for garbage pickup,
so you could get one for nothing.

Is this a joke?You have a working 30-years old VCR?And you want to keep
it?Give it to seomeone poor.A brand-new stereo philips VCR cost only 95
euro.

--
Dimitris Tzortzakakis,Iraklion Crete,Greece
Analogue technology rules-digital sucks
http://www.patriko-kreta.com
dimtzort AT otenet DOT gr the return adress is corrupted
Warning:all offending emails will be deleted, and the offender/spammer
will be put on my personal "black list".
? "DaveC" ?????? ??? ??????
al.net...
This Panasonic NV-2110 3/4-inch VCR outputs RF on CH 5 or CH 6
(switch-selectable). There is no other choice of output channel. (This is
an
(*old* VCR, circa 1973, much discrete circuitry.)

Is the determination of frequency as simple as changing the xtals for
these
channels? (RF mod circuit uses two xtals for these channels.)

If I want change the circuit such that video is output to RF CH 3 or 4, is
this a straightforward xtal swap? Recal required afterward?

Has anyone done this before?

Thanks,
--
DaveC

This is an invalid return address
Please reply in the news group

"Tzortzakakis Dimitrios" wrote:

Is this a joke?You have a working 30-years old VCR?And you want to keep
it?Give it to seomeone poor.A brand-new stereo philips VCR cost only 95
euro.

How do you know the OP isn't poor?


Tim
--
Love is a travelator.