Transceiver mod
 

I have an HF transceiver which can be easily modified to work outside
the ham bands. I want to perform the mod so I can use the radio with
VHF/UHF transverters and cover the entire bands. Would this be legal?
I have discussed this with several fellow hams but have not really got
any kind of definitive answer yet.

Jimmie.

Transceiver mod
 

On May 26, 4:51*pm, JIMMIE wrote:
I have an HF transceiver which can be easily modified to work outside
the ham bands. I want to perform the mod so I can use the radio with
VHF/UHF transverters and cover the entire bands. Would this be legal?
I have discussed this with several fellow hams but have not really got
any kind of definitive answer yet.

Jimmie.

Assuming you're in a country where the governing agency lets hams
build their own equipment for operation on ham bands, what could
possibly be wrong with it? So long as you use modes, powers and
frequencies for which you're licensed, and you transmit an
appropriately clean signal, who's going to have any problem? You
could, of course, get into trouble quickly if you transmit a signal on
frequencies you're not licensed to use. Where I am, at least, I can
legally build RF power generating equipment for any frequency I want,
so long as I don't use it to transmit unauthorized signals. (My RF
signal generator is capable of putting out enough power to get me into
trouble all the way from kHz to several GHz if I connect it to an
antenna, but that's not what I use it for. I've even been using it
with a broadband 100 watt amplifier lately, and I'm not at all worried
about the legalities, since the power goes into a dummy load where
it's turned to heat.)

Cheers,
Tom

Transceiver mod
 

JIMMIE wrote:
I have an HF transceiver which can be easily modified to work outside
the ham bands. I want to perform the mod so I can use the radio with
VHF/UHF transverters and cover the entire bands. Would this be legal?
I have discussed this with several fellow hams but have not really got
any kind of definitive answer yet.

Jimmie.

As a licensed amateur (I'm assuming US), you can do anything you want
with your equipment as long as you don't transmit outside of the
frequencies and modes authorized by your class of license.


--
Jim Pennino

Remove .spam.sux to reply.

Transceiver mod
 

On May 26, 8:30*pm, wrote:
JIMMIE wrote:
I have an HF transceiver which can be easily modified to work outside
the ham bands. I want to perform the mod so I can use the radio with
VHF/UHF transverters and cover the entire bands. Would this be legal?
I have discussed this with several fellow hams but have not really got
any kind of definitive answer yet.

Jimmie.

As a licensed amateur (I'm assuming US), you can do anything you want
with your equipment as long as you don't transmit outside of the
frequencies and modes authorized by your class of license.

--
Jim Pennino

Remove .spam.sux to reply.

Thanks Tom and Jim, It was also my reasoning that if I could build my
own transmitter and operate it surely modifying equipment would be
legal as long as I did not transmit outside the bands. The radio is
an Icom and I use software thst I wrote to control the frequency/mode.
It would not be too difficult to modify the software to limit the
frequency data sent to the transceiver in accordance with the band I
am using. The software already "knows" when I use the transverters so
I get the proper frequency dispaly. As the XYL and YL may be using it
some goof proofing may be in order. Hopefully soon I will also have
the computer controling the switching of the transverters.

Jimmie

Transceiver mod
 

"JIMMIE" wrote in message
...
I have an HF transceiver which can be easily modified to work outside
the ham bands. I want to perform the mod so I can use the radio with
VHF/UHF transverters and cover the entire bands. Would this be legal?
I have discussed this with several fellow hams but have not really got
any kind of definitive answer yet.

Jimmie.

This is the basic way many transceivers have worked for many years. The
basic signal generating part is almost never on the same frequency as the
desired output.

As mentioned by others assuming you are in the US anyway it does not mater
what you do to generate the output frequency as long as the final results
are in the ham band and meets the other requirements.

Transceiver mod
 

JIMMIE wrote:
I have an HF transceiver which can be easily modified to work outside
the ham bands. I want to perform the mod so I can use the radio with
VHF/UHF transverters and cover the entire bands. Would this be legal?
I have discussed this with several fellow hams but have not really got
any kind of definitive answer yet.

Jimmie.

Assuming you are a licensed ham, it is perfectly legal...IF...you do not
transmit over the air on a frequency that is NOT authorized. With
transverters, the RF coming out of the HF transceiver goes into the
transverter on a coax cable. It is not going out over the air. The
transverter output must be filtered enough to only pass the desired
signal and must reduce harmonics and spurious emissions (of which your
IF frequency could be considered a spurious emission).

Transceiver mod
 

"JIMMIE" wrote in message
...
On May 26, 8:30 pm, wrote:
JIMMIE wrote:
I have an HF transceiver which can be easily modified to work outside
the ham bands. I want to perform the mod so I can use the radio with
VHF/UHF transverters and cover the entire bands. Would this be legal?
I have discussed this with several fellow hams but have not really got
any kind of definitive answer yet.

Jimmie.

As a licensed amateur (I'm assuming US), you can do anything you want
with your equipment as long as you don't transmit outside of the
frequencies and modes authorized by your class of license.

--
Jim Pennino

Remove .spam.sux to reply.

Thanks Tom and Jim, It was also my reasoning that if I could build my
own transmitter and operate it surely modifying equipment would be
legal as long as I did not transmit outside the bands. The radio is
an Icom and I use software thst I wrote to control the frequency/mode.
It would not be too difficult to modify the software to limit the
frequency data sent to the transceiver in accordance with the band I
am using. The software already "knows" when I use the transverters so
I get the proper frequency dispaly. As the XYL and YL may be using it
some goof proofing may be in order. Hopefully soon I will also have
the computer controling the switching of the transverters.

Jimmie

The spectral purity specifications in part 97. Most HF rigs have allowed
some out of band operation ever since I could remember. It is the shared
responsibility of the station licensee and control ops to stay cleanly
within their grant. Regular RG 58c provides at least 60db of isolation from
adjacent cabling. Be aware of the possibilities of what might come out of
the antenna ports and take appropriate action. If you waste a little power
in an attenuator and/ or filter circuit on the input of the Xverter,
spurious from the driving radio are also reduced. Nice to be able to verify
with a spectrum analyzer too if you know someone. GL

Transceiver mod
 

On May 27, 2:46*pm, "JB" wrote:
"JIMMIE" wrote in message

...
On May 26, 8:30 pm, wrote:





JIMMIE wrote:
I have an HF transceiver which can be easily modified to work outside
the ham bands. I want to perform the mod so I can use the radio with
VHF/UHF transverters and cover the entire bands. Would this be legal?
I have discussed this with several fellow hams but have not really got
any kind of definitive answer yet.

Jimmie.

As a licensed amateur (I'm assuming US), you can do anything you want
with your equipment as long as you don't transmit outside of the
frequencies and modes authorized by your class of license.

--
Jim Pennino

Remove .spam.sux to reply.
Thanks Tom and Jim, It was also my reasoning that if I could build my

own transmitter and operate it surely modifying equipment would be
legal as long as I did *not transmit outside the bands. The radio is
an Icom and I use software thst I wrote to control the frequency/mode.
It would not be too difficult to modify the software to limit the
frequency data sent to the transceiver in accordance with the band I
am using. The software already *"knows" when I use the transverters so
I get the proper frequency dispaly. As the XYL and YL may be using it
some goof proofing may be in order. Hopefully soon I will also have
the computer controling the switching of the transverters.

Jimmie

The spectral purity specifications in part 97. *Most HF rigs have allowed
some out of band operation ever since I could remember. *It is the shared
responsibility of the station licensee and control ops to stay cleanly
within their grant. *Regular RG 58c provides at least 60db of isolation from
adjacent cabling. *Be aware of the possibilities of what might come out of
the antenna ports and take appropriate action. *If you waste a little power
in an attenuator and/ or filter circuit on the input of the Xverter,
spurious from the driving radio are also reduced. *Nice to be able to verify
with a spectrum analyzer too if you know someone. *GL- Hide quoted text -

- Show quoted text -

I did the mod today and it certainly is nice to be able to work the
whole 2M band AM/FM/SSB and CW. I still have to do some cabling when I
go from HF to VHF or vice versa I have some really good coaxial relays
that I could soon rig up to operate manually and hopefully controled
by the PC in the more distant future. The transverter I have was set
up for use with a 10M IF however if I could modify it for a 6M IF
things would be greatly simplified as the transceiver covers 6M at
reduce power(10 watts) compared to 100 watts on HF.


Jimmie

Transceiver mod
 

"JIMMIE" wrote in message
...
On May 27, 2:46 pm, "JB" wrote:
"JIMMIE" wrote in message

...
On May 26, 8:30 pm, wrote:





JIMMIE wrote:
I have an HF transceiver which can be easily modified to work outside
the ham bands. I want to perform the mod so I can use the radio with
VHF/UHF transverters and cover the entire bands. Would this be legal?
I have discussed this with several fellow hams but have not really got
any kind of definitive answer yet.

Jimmie.

As a licensed amateur (I'm assuming US), you can do anything you want
with your equipment as long as you don't transmit outside of the
frequencies and modes authorized by your class of license.

--
Jim Pennino

Remove .spam.sux to reply.
Thanks Tom and Jim, It was also my reasoning that if I could build my

own transmitter and operate it surely modifying equipment would be
legal as long as I did not transmit outside the bands. The radio is
an Icom and I use software thst I wrote to control the frequency/mode.
It would not be too difficult to modify the software to limit the
frequency data sent to the transceiver in accordance with the band I
am using. The software already "knows" when I use the transverters so
I get the proper frequency dispaly. As the XYL and YL may be using it
some goof proofing may be in order. Hopefully soon I will also have
the computer controling the switching of the transverters.

Jimmie

The spectral purity specifications in part 97. Most HF rigs have allowed
some out of band operation ever since I could remember. It is the shared
responsibility of the station licensee and control ops to stay cleanly
within their grant. Regular RG 58c provides at least 60db of isolation
from
adjacent cabling. Be aware of the possibilities of what might come out of
the antenna ports and take appropriate action. If you waste a little power
in an attenuator and/ or filter circuit on the input of the Xverter,
spurious from the driving radio are also reduced. Nice to be able to
verify
with a spectrum analyzer too if you know someone. GL- Hide quoted text -

- Show quoted text -

I did the mod today and it certainly is nice to be able to work the
whole 2M band AM/FM/SSB and CW. I still have to do some cabling when I
go from HF to VHF or vice versa I have some really good coaxial relays
that I could soon rig up to operate manually and hopefully controled
by the PC in the more distant future. The transverter I have was set
up for use with a 10M IF however if I could modify it for a 6M IF
things would be greatly simplified as the transceiver covers 6M at
reduce power(10 watts) compared to 100 watts on HF.


Jimmie

I certainly like the idea of using the ham rig as a decent general coverage
receiver for SWL and I had to do the mod anyway for 60m operation. You just
have to get in the habit of looking at the radio to verify conditions before
keying up. Like checking the swimming pool to see if there is water in it
first.

Transceiver mod
 

*Like checking the swimming pool to see if there is water in it
first.

Hey OM:

My swimming pool is Lake Erie, be a long time for it to dry out.

73 OM
de n8zu