Milton.
There is an assembly/operation manual (Heath)at ftp://bama.sbc.edu/downloads/heath/gd1b/
The grid dip meter is essentially used to determine the frequency of a tuned circuit in the oscillator mode. Using the appropriate plugin coil and holding the coil next to the coil in the tuned circuit will show a dip in the meter reading when resonance is reached either by adjusting the meter or the tuned circuit. The reading on the grid dip meter scale for the plugin coil will give you the approxomate frequency. When resonance of the tuned circuit is reached it will draw energy from the meter thus giving a dip. In diode mode of the meter energy is drawn from the energized circuit under test by the meter and gives an upward meter reading as resonance is reached.
Radiodoc
Hi Nick,
Yes you can. Using the appropriate plugin coil (probe)placed near the oscillator coil you can determine if the oscillator is working (increase in meter reading)with the meter in diode mode. With the meter in oscillator mode, you can test the oscillator coil and circuit (with the power off). Say the radio has an IF frequency of 455 KHz and with the radio dial set for say 1000 KHz set the meter at 1455 there should be a dip. I assume yours is a Heath grid dip meter/oscillator. Just for kicks you may want to go to http://bama.sbc.edu and look up Millen 90651 and download the manual for that grid dip meter. It has fairly extensive reading on how to use and what test/measurements can be made. It works essentially like your Heath.
Radiodoc
Thanks,
David S.
::::Hello Gentlemen, recently I’ve purchased a grid dip meter. Although I have partial manual for this unit (Heathkit GD-1B) I have not clear what is expected to happen when the dip is reached, ¿a drift or a drop of the needle?
::::Im not familiar with this equipment so a little advice on here is welcome.
::::Thanks.
::::
::::Milton.
::::
:::Hi Milton,
:::
:::There is an assembly/operation manual (Heath)at ftp://bama.sbc.edu/downloads/heath/gd1b/
:::
:::The grid dip meter is essentially used to determine the frequency of a tuned circuit in the oscillator mode. Using the appropriate plugin coil and holding the coil next to the coil in the tuned circuit will show a dip in the meter reading when resonance is reached either by adjusting the meter or the tuned circuit. The reading on the grid dip meter scale for the plugin coil will give you the approxomate frequency. When resonance of the tuned circuit is reached it will draw energy from the meter thus giving a dip. In diode mode of the meter energy is drawn from the energized circuit under test by the meter and gives an upward meter reading as resonance is reached.
:::
:::Radiodoc
:::
:::I have a similar question; can this meter be used to determine if the oacillator is working in a standard AM radio? Nick
:
:Hi Nick,
:
:Yes you can. Using the appropriate plugin coil (probe)placed near the oscillator coil you can determine if the oscillator is working (increase in meter reading)with the meter in diode mode. With the meter in oscillator mode, you can test the oscillator coil and circuit (with the power off). Say the radio has an IF frequency of 455 KHz and with the radio dial set for say 1000 KHz set the meter at 1455 there should be a dip. I assume yours is a Heath grid dip meter/oscillator. Just for kicks you may want to go to http://bama.sbc.edu and look up Millen 90651 and download the manual for that grid dip meter. It has fairly extensive reading on how to use and what test/measurements can be made. It works essentially like your Heath.
:
:Radiodoc
:
I have a Millen 90651 with all the standard coils. I don't have any of the LF coils (below 1700KHz). Many, many years ago when I was in school the lab had a Millen GDM with all the coils. If memory serves me the LF coils had 3 pins on them and I seem to remember the probe coils looked like the coils inside old IF transformers.
Radiodoc
:I have Millen 90651A and would like to know if there is a formula that can be used to determine the number of turns required for building probe so that lower frequency can be mesaured that are below the lowest frequency range of the meter or is there more to it?
:
:Thanks,
:
:David S.
:
:::::Hello Gentlemen, recently I’ve purchased a grid dip meter. Although I have partial manual for this unit (Heathkit GD-1B) I have not clear what is expected to happen when the dip is reached, ¿a drift or a drop of the needle?
:::::Im not familiar with this equipment so a little advice on here is welcome.
:::::Thanks.
:::::
:::::Milton.
:::::
::::Hi Milton,
::::
::::There is an assembly/operation manual (Heath)at ftp://bama.sbc.edu/downloads/heath/gd1b/
::::
::::The grid dip meter is essentially used to determine the frequency of a tuned circuit in the oscillator mode. Using the appropriate plugin coil and holding the coil next to the coil in the tuned circuit will show a dip in the meter reading when resonance is reached either by adjusting the meter or the tuned circuit. The reading on the grid dip meter scale for the plugin coil will give you the approxomate frequency. When resonance of the tuned circuit is reached it will draw energy from the meter thus giving a dip. In diode mode of the meter energy is drawn from the energized circuit under test by the meter and gives an upward meter reading as resonance is reached.
::::
::::Radiodoc
::::
::::I have a similar question; can this meter be used to determine if the oacillator is working in a standard AM radio? Nick
::
::Hi Nick,
::
::Yes you can. Using the appropriate plugin coil (probe)placed near the oscillator coil you can determine if the oscillator is working (increase in meter reading)with the meter in diode mode. With the meter in oscillator mode, you can test the oscillator coil and circuit (with the power off). Say the radio has an IF frequency of 455 KHz and with the radio dial set for say 1000 KHz set the meter at 1455 there should be a dip. I assume yours is a Heath grid dip meter/oscillator. Just for kicks you may want to go to http://bama.sbc.edu and look up Millen 90651 and download the manual for that grid dip meter. It has fairly extensive reading on how to use and what test/measurements can be made. It works essentially like your Heath.
::
::Radiodoc
::
I did notice on the face of the meter a third input, and from photos somewhere on the web of the low freq coils, the base are setup with the three pins, but not sure if all three pins are connected to the internal coil.
David S
:Hi David S.,
:
:I have a Millen 90651 with all the standard coils. I don't have any of the LF coils (below 1700KHz). Many, many years ago when I was in school the lab had a Millen GDM with all the coils. If memory serves me the LF coils had 3 pins on them and I seem to remember the probe coils looked like the coils inside old IF transformers.
:
:Radiodoc
:
:
::I have Millen 90651A and would like to know if there is a formula that can be used to determine the number of turns required for building probe so that lower frequency can be mesaured that are below the lowest frequency range of the meter or is there more to it?
::
::Thanks,
::
::David S.
::
::::::Hello Gentlemen, recently I’ve purchased a grid dip meter. Although I have partial manual for this unit (Heathkit GD-1B) I have not clear what is expected to happen when the dip is reached, ¿a drift or a drop of the needle?
::::::Im not familiar with this equipment so a little advice on here is welcome.
::::::Thanks.
::::::
::::::Milton.
::::::
:::::Hi Milton,
:::::
:::::There is an assembly/operation manual (Heath)at ftp://bama.sbc.edu/downloads/heath/gd1b/
:::::
:::::The grid dip meter is essentially used to determine the frequency of a tuned circuit in the oscillator mode. Using the appropriate plugin coil and holding the coil next to the coil in the tuned circuit will show a dip in the meter reading when resonance is reached either by adjusting the meter or the tuned circuit. The reading on the grid dip meter scale for the plugin coil will give you the approxomate frequency. When resonance of the tuned circuit is reached it will draw energy from the meter thus giving a dip. In diode mode of the meter energy is drawn from the energized circuit under test by the meter and gives an upward meter reading as resonance is reached.
:::::
:::::Radiodoc
:::::
:::::I have a similar question; can this meter be used to determine if the oacillator is working in a standard AM radio? Nick
:::
:::Hi Nick,
:::
:::Yes you can. Using the appropriate plugin coil (probe)placed near the oscillator coil you can determine if the oscillator is working (increase in meter reading)with the meter in diode mode. With the meter in oscillator mode, you can test the oscillator coil and circuit (with the power off). Say the radio has an IF frequency of 455 KHz and with the radio dial set for say 1000 KHz set the meter at 1455 there should be a dip. I assume yours is a Heath grid dip meter/oscillator. Just for kicks you may want to go to http://bama.sbc.edu and look up Millen 90651 and download the manual for that grid dip meter. It has fairly extensive reading on how to use and what test/measurements can be made. It works essentially like your Heath.
:::
:::Radiodoc
:::
I would suspect the third pin would be for stability(?) since the LF coils would be somewhat heavier than the HF coils since they would have considerably more wire in the coils. I never really had a need for the LF coils since my work was in communications. I used the GDM to align VHF transmitter tank circuits close to the operating frequency before applying power. The GDM was also useful in neutralizing the various stages in a transmitter and checking for parasitics.
Radiodoc
:Radiodoc,
:
:I did notice on the face of the meter a third input, and from photos somewhere on the web of the low freq coils, the base are setup with the three pins, but not sure if all three pins are connected to the internal coil.
:
:David S
:
::Hi David S.,
::
::I have a Millen 90651 with all the standard coils. I don't have any of the LF coils (below 1700KHz). Many, many years ago when I was in school the lab had a Millen GDM with all the coils. If memory serves me the LF coils had 3 pins on them and I seem to remember the probe coils looked like the coils inside old IF transformers.
::
::Radiodoc
::
::
:::I have Millen 90651A and would like to know if there is a formula that can be used to determine the number of turns required for building probe so that lower frequency can be mesaured that are below the lowest frequency range of the meter or is there more to it?
:::
:::Thanks,
:::
:::David S.
:::
:::::::Hello Gentlemen, recently I’ve purchased a grid dip meter. Although I have partial manual for this unit (Heathkit GD-1B) I have not clear what is expected to happen when the dip is reached, ¿a drift or a drop of the needle?
:::::::Im not familiar with this equipment so a little advice on here is welcome.
:::::::Thanks.
:::::::
:::::::Milton.
:::::::
::::::Hi Milton,
::::::
::::::There is an assembly/operation manual (Heath)at ftp://bama.sbc.edu/downloads/heath/gd1b/
::::::
::::::The grid dip meter is essentially used to determine the frequency of a tuned circuit in the oscillator mode. Using the appropriate plugin coil and holding the coil next to the coil in the tuned circuit will show a dip in the meter reading when resonance is reached either by adjusting the meter or the tuned circuit. The reading on the grid dip meter scale for the plugin coil will give you the approxomate frequency. When resonance of the tuned circuit is reached it will draw energy from the meter thus giving a dip. In diode mode of the meter energy is drawn from the energized circuit under test by the meter and gives an upward meter reading as resonance is reached.
::::::
::::::Radiodoc
::::::
::::::I have a similar question; can this meter be used to determine if the oacillator is working in a standard AM radio? Nick
::::
::::Hi Nick,
::::
::::Yes you can. Using the appropriate plugin coil (probe)placed near the oscillator coil you can determine if the oscillator is working (increase in meter reading)with the meter in diode mode. With the meter in oscillator mode, you can test the oscillator coil and circuit (with the power off). Say the radio has an IF frequency of 455 KHz and with the radio dial set for say 1000 KHz set the meter at 1455 there should be a dip. I assume yours is a Heath grid dip meter/oscillator. Just for kicks you may want to go to http://bama.sbc.edu and look up Millen 90651 and download the manual for that grid dip meter. It has fairly extensive reading on how to use and what test/measurements can be made. It works essentially like your Heath.
::::
::::Radiodoc
::::
It doesn't show the schematics for all the coils, but does explain how to calibrate coils for very low frequencies.
Rich
******************************
:David S,
:
:I would suspect the third pin would be for stability(?) since the LF coils would be somewhat heavier than the HF coils since they would have considerably more wire in the coils. I never really had a need for the LF coils since my work was in communications. I used the GDM to align VHF transmitter tank circuits close to the operating frequency before applying power. The GDM was also useful in neutralizing the various stages in a transmitter and checking for parasitics.
:
:Radiodoc
:
:
::Radiodoc,
::
::I did notice on the face of the meter a third input, and from photos somewhere on the web of the low freq coils, the base are setup with the three pins, but not sure if all three pins are connected to the internal coil.
::
::David S
::
:::Hi David S.,
:::
:::I have a Millen 90651 with all the standard coils. I don't have any of the LF coils (below 1700KHz). Many, many years ago when I was in school the lab had a Millen GDM with all the coils. If memory serves me the LF coils had 3 pins on them and I seem to remember the probe coils looked like the coils inside old IF transformers.
:::
:::Radiodoc
:::
:::
::::I have Millen 90651A and would like to know if there is a formula that can be used to determine the number of turns required for building probe so that lower frequency can be mesaured that are below the lowest frequency range of the meter or is there more to it?
::::
::::Thanks,
::::
::::David S.
::::
::::::::Hello Gentlemen, recently I’ve purchased a grid dip meter. Although I have partial manual for this unit (Heathkit GD-1B) I have not clear what is expected to happen when the dip is reached, ¿a drift or a drop of the needle?
::::::::Im not familiar with this equipment so a little advice on here is welcome.
::::::::Thanks.
::::::::
::::::::Milton.
::::::::
:::::::Hi Milton,
:::::::
:::::::There is an assembly/operation manual (Heath)at ftp://bama.sbc.edu/downloads/heath/gd1b/
:::::::
:::::::The grid dip meter is essentially used to determine the frequency of a tuned circuit in the oscillator mode. Using the appropriate plugin coil and holding the coil next to the coil in the tuned circuit will show a dip in the meter reading when resonance is reached either by adjusting the meter or the tuned circuit. The reading on the grid dip meter scale for the plugin coil will give you the approxomate frequency. When resonance of the tuned circuit is reached it will draw energy from the meter thus giving a dip. In diode mode of the meter energy is drawn from the energized circuit under test by the meter and gives an upward meter reading as resonance is reached.
:::::::
:::::::Radiodoc
:::::::
:::::::I have a similar question; can this meter be used to determine if the oacillator is working in a standard AM radio? Nick
:::::
:::::Hi Nick,
:::::
:::::Yes you can. Using the appropriate plugin coil (probe)placed near the oscillator coil you can determine if the oscillator is working (increase in meter reading)with the meter in diode mode. With the meter in oscillator mode, you can test the oscillator coil and circuit (with the power off). Say the radio has an IF frequency of 455 KHz and with the radio dial set for say 1000 KHz set the meter at 1455 there should be a dip. I assume yours is a Heath grid dip meter/oscillator. Just for kicks you may want to go to http://bama.sbc.edu and look up Millen 90651 and download the manual for that grid dip meter. It has fairly extensive reading on how to use and what test/measurements can be made. It works essentially like your Heath.
:::::
:::::Radiodoc
:::::
http://www.qsl.net/n4xy/GDO_Millen.html
Apparently, the LF coils are tapped, so 3 pins are needed. I was wrong about the internal capacitor.
Rich
*********************************************
:I think the third pin connects an additional capacitor located inside the LF plug-in coil. Check out the complete manual at:
:http://bama.sbc.edu/millen.htm
:
:It doesn't show the schematics for all the coils, but does explain how to calibrate coils for very low frequencies.
:
:Rich
:******************************
:
::David S,
::
::I would suspect the third pin would be for stability(?) since the LF coils would be somewhat heavier than the HF coils since they would have considerably more wire in the coils. I never really had a need for the LF coils since my work was in communications. I used the GDM to align VHF transmitter tank circuits close to the operating frequency before applying power. The GDM was also useful in neutralizing the various stages in a transmitter and checking for parasitics.
::
::Radiodoc
::
::
:::Radiodoc,
:::
:::I did notice on the face of the meter a third input, and from photos somewhere on the web of the low freq coils, the base are setup with the three pins, but not sure if all three pins are connected to the internal coil.
:::
:::David S
:::
::::Hi David S.,
::::
::::I have a Millen 90651 with all the standard coils. I don't have any of the LF coils (below 1700KHz). Many, many years ago when I was in school the lab had a Millen GDM with all the coils. If memory serves me the LF coils had 3 pins on them and I seem to remember the probe coils looked like the coils inside old IF transformers.
::::
::::Radiodoc
::::
::::
:::::I have Millen 90651A and would like to know if there is a formula that can be used to determine the number of turns required for building probe so that lower frequency can be mesaured that are below the lowest frequency range of the meter or is there more to it?
:::::
:::::Thanks,
:::::
:::::David S.
:::::
:::::::::Hello Gentlemen, recently I’ve purchased a grid dip meter. Although I have partial manual for this unit (Heathkit GD-1B) I have not clear what is expected to happen when the dip is reached, ¿a drift or a drop of the needle?
:::::::::Im not familiar with this equipment so a little advice on here is welcome.
:::::::::Thanks.
:::::::::
:::::::::Milton.
:::::::::
::::::::Hi Milton,
::::::::
::::::::There is an assembly/operation manual (Heath)at ftp://bama.sbc.edu/downloads/heath/gd1b/
::::::::
::::::::The grid dip meter is essentially used to determine the frequency of a tuned circuit in the oscillator mode. Using the appropriate plugin coil and holding the coil next to the coil in the tuned circuit will show a dip in the meter reading when resonance is reached either by adjusting the meter or the tuned circuit. The reading on the grid dip meter scale for the plugin coil will give you the approxomate frequency. When resonance of the tuned circuit is reached it will draw energy from the meter thus giving a dip. In diode mode of the meter energy is drawn from the energized circuit under test by the meter and gives an upward meter reading as resonance is reached.
::::::::
::::::::Radiodoc
::::::::
::::::::I have a similar question; can this meter be used to determine if the oacillator is working in a standard AM radio? Nick
::::::
::::::Hi Nick,
::::::
::::::Yes you can. Using the appropriate plugin coil (probe)placed near the oscillator coil you can determine if the oscillator is working (increase in meter reading)with the meter in diode mode. With the meter in oscillator mode, you can test the oscillator coil and circuit (with the power off). Say the radio has an IF frequency of 455 KHz and with the radio dial set for say 1000 KHz set the meter at 1455 there should be a dip. I assume yours is a Heath grid dip meter/oscillator. Just for kicks you may want to go to http://bama.sbc.edu and look up Millen 90651 and download the manual for that grid dip meter. It has fairly extensive reading on how to use and what test/measurements can be made. It works essentially like your Heath.
::::::
::::::Radiodoc
::::::
Thanks for the insight. It had been so many years since I had seen one of these.
Radiodoc
:There is a useful website that gives specific info on the Lo Freq. coils.
:
:http://www.qsl.net/n4xy/GDO_Millen.html
:
:Apparently, the LF coils are tapped, so 3 pins are needed. I was wrong about the internal capacitor.
:
:Rich
:*********************************************
:
::I think the third pin connects an additional capacitor located inside the LF plug-in coil. Check out the complete manual at:
::http://bama.sbc.edu/millen.htm
::
::It doesn't show the schematics for all the coils, but does explain how to calibrate coils for very low frequencies.
::
::Rich
::******************************
::
:::David S,
:::
:::I would suspect the third pin would be for stability(?) since the LF coils would be somewhat heavier than the HF coils since they would have considerably more wire in the coils. I never really had a need for the LF coils since my work was in communications. I used the GDM to align VHF transmitter tank circuits close to the operating frequency before applying power. The GDM was also useful in neutralizing the various stages in a transmitter and checking for parasitics.
:::
:::Radiodoc
:::
:::
::::Radiodoc,
::::
::::I did notice on the face of the meter a third input, and from photos somewhere on the web of the low freq coils, the base are setup with the three pins, but not sure if all three pins are connected to the internal coil.
::::
::::David S
::::
:::::Hi David S.,
:::::
:::::I have a Millen 90651 with all the standard coils. I don't have any of the LF coils (below 1700KHz). Many, many years ago when I was in school the lab had a Millen GDM with all the coils. If memory serves me the LF coils had 3 pins on them and I seem to remember the probe coils looked like the coils inside old IF transformers.
:::::
:::::Radiodoc
:::::
:::::
::::::I have Millen 90651A and would like to know if there is a formula that can be used to determine the number of turns required for building probe so that lower frequency can be mesaured that are below the lowest frequency range of the meter or is there more to it?
::::::
::::::Thanks,
::::::
::::::David S.
::::::
::::::::::Hello Gentlemen, recently I’ve purchased a grid dip meter. Although I have partial manual for this unit (Heathkit GD-1B) I have not clear what is expected to happen when the dip is reached, ¿a drift or a drop of the needle?
::::::::::Im not familiar with this equipment so a little advice on here is welcome.
::::::::::Thanks.
::::::::::
::::::::::Milton.
::::::::::
:::::::::Hi Milton,
:::::::::
:::::::::There is an assembly/operation manual (Heath)at ftp://bama.sbc.edu/downloads/heath/gd1b/
:::::::::
:::::::::The grid dip meter is essentially used to determine the frequency of a tuned circuit in the oscillator mode. Using the appropriate plugin coil and holding the coil next to the coil in the tuned circuit will show a dip in the meter reading when resonance is reached either by adjusting the meter or the tuned circuit. The reading on the grid dip meter scale for the plugin coil will give you the approxomate frequency. When resonance of the tuned circuit is reached it will draw energy from the meter thus giving a dip. In diode mode of the meter energy is drawn from the energized circuit under test by the meter and gives an upward meter reading as resonance is reached.
:::::::::
:::::::::Radiodoc
:::::::::
:::::::::I have a similar question; can this meter be used to determine if the oacillator is working in a standard AM radio? Nick
:::::::
:::::::Hi Nick,
:::::::
:::::::Yes you can. Using the appropriate plugin coil (probe)placed near the oscillator coil you can determine if the oscillator is working (increase in meter reading)with the meter in diode mode. With the meter in oscillator mode, you can test the oscillator coil and circuit (with the power off). Say the radio has an IF frequency of 455 KHz and with the radio dial set for say 1000 KHz set the meter at 1455 there should be a dip. I assume yours is a Heath grid dip meter/oscillator. Just for kicks you may want to go to http://bama.sbc.edu and look up Millen 90651 and download the manual for that grid dip meter. It has fairly extensive reading on how to use and what test/measurements can be made. It works essentially like your Heath.
:::::::
:::::::Radiodoc
:::::::
Thanks for the link - now I have some additional information. I will most likely e-mail the writer and see if he/she can provide additional information regarding the construction, such as are the three windings one on top of each other or are they three separate coils placed end-to-end.
David S.
:There is a useful website that gives specific info on the Lo Freq. coils.
:
:http://www.qsl.net/n4xy/GDO_Millen.html
:
:Apparently, the LF coils are tapped, so 3 pins are needed. I was wrong about the internal capacitor.
:
:Rich
:*********************************************
:
::I think the third pin connects an additional capacitor located inside the LF plug-in coil. Check out the complete manual at:
::http://bama.sbc.edu/millen.htm
::
::It doesn't show the schematics for all the coils, but does explain how to calibrate coils for very low frequencies.
::
::Rich
::******************************
::
:::David S,
:::
:::I would suspect the third pin would be for stability(?) since the LF coils would be somewhat heavier than the HF coils since they would have considerably more wire in the coils. I never really had a need for the LF coils since my work was in communications. I used the GDM to align VHF transmitter tank circuits close to the operating frequency before applying power. The GDM was also useful in neutralizing the various stages in a transmitter and checking for parasitics.
:::
:::Radiodoc
:::
:::
::::Radiodoc,
::::
::::I did notice on the face of the meter a third input, and from photos somewhere on the web of the low freq coils, the base are setup with the three pins, but not sure if all three pins are connected to the internal coil.
::::
::::David S
::::
:::::Hi David S.,
:::::
:::::I have a Millen 90651 with all the standard coils. I don't have any of the LF coils (below 1700KHz). Many, many years ago when I was in school the lab had a Millen GDM with all the coils. If memory serves me the LF coils had 3 pins on them and I seem to remember the probe coils looked like the coils inside old IF transformers.
:::::
:::::Radiodoc
:::::
:::::
::::::I have Millen 90651A and would like to know if there is a formula that can be used to determine the number of turns required for building probe so that lower frequency can be mesaured that are below the lowest frequency range of the meter or is there more to it?
::::::
::::::Thanks,
::::::
::::::David S.
::::::
::::::::::Hello Gentlemen, recently I’ve purchased a grid dip meter. Although I have partial manual for this unit (Heathkit GD-1B) I have not clear what is expected to happen when the dip is reached, ¿a drift or a drop of the needle?
::::::::::Im not familiar with this equipment so a little advice on here is welcome.
::::::::::Thanks.
::::::::::
::::::::::Milton.
::::::::::
:::::::::Hi Milton,
:::::::::
:::::::::There is an assembly/operation manual (Heath)at ftp://bama.sbc.edu/downloads/heath/gd1b/
:::::::::
:::::::::The grid dip meter is essentially used to determine the frequency of a tuned circuit in the oscillator mode. Using the appropriate plugin coil and holding the coil next to the coil in the tuned circuit will show a dip in the meter reading when resonance is reached either by adjusting the meter or the tuned circuit. The reading on the grid dip meter scale for the plugin coil will give you the approxomate frequency. When resonance of the tuned circuit is reached it will draw energy from the meter thus giving a dip. In diode mode of the meter energy is drawn from the energized circuit under test by the meter and gives an upward meter reading as resonance is reached.
:::::::::
:::::::::Radiodoc
:::::::::
:::::::::I have a similar question; can this meter be used to determine if the oacillator is working in a standard AM radio? Nick
:::::::
:::::::Hi Nick,
:::::::
:::::::Yes you can. Using the appropriate plugin coil (probe)placed near the oscillator coil you can determine if the oscillator is working (increase in meter reading)with the meter in diode mode. With the meter in oscillator mode, you can test the oscillator coil and circuit (with the power off). Say the radio has an IF frequency of 455 KHz and with the radio dial set for say 1000 KHz set the meter at 1455 there should be a dip. I assume yours is a Heath grid dip meter/oscillator. Just for kicks you may want to go to http://bama.sbc.edu and look up Millen 90651 and download the manual for that grid dip meter. It has fairly extensive reading on how to use and what test/measurements can be made. It works essentially like your Heath.
:::::::
:::::::Radiodoc
:::::::