Alignment

[Dolphin1]

I have a Signal generator,it starts at 10 MHz.
Does anyone know if a CB frequency into the radio can be used into the ANT connector
then all the rf and if coils be aligned using this frequency.

This is because I do not have a generator at 455 KHz.I use channel 19 at around 1uV or less with 30% Modulation.

Thanks,Jim.

 

[jackj]

Yes you can do a complete alignment using a RF signal applied to the antenna jack. Two things to watch out for:

1. Be sure to use a stable, on frequency signal.
2. Don't key the transmitter into the signal generator.

But why do you think you need to do an alignment on the receiver? The alignment won't change unless you have replaced some major component.

 

[rfradioconsult]

Is your signal generator designed for general radio type work or is it designed for communications level work? The problem with general purpose signal generators is stability of the signal and the attenuator used to vary the output level. Most of the general purpose generators suffer from leakage of the generated signal and the accuracy of the indicated level at low levels.

 

[Dolphin1]

I got this radio on E Bay it was sold as converted to 10 Meters AM Radio.
I did not hear any signals on this radio,I thought something was wrong.
I later bought a Signal Generator FARNELL PSG520.

It has 2 variable pads 0 to -119 dBm.
Internal or external modulation,AM FM
Thumbwheel control Frequency 10-520 MHz.
Digital readout deviation,Percent of modulation in AM Mode.
N Connector RF output.

I found out that the CB had broken caps to chassis ground from circuit ground
I fixed those it solved the problem of to much noise.
So since this starts at 10 MHz and not 455 KHz,that's why I asked this question.

I have aligned this but i still do not hear any signals on the antenna.Maybe no one is transmitting?
This is on 10 Meters AM 28.995-29.235 MHz. I used 29.105 MHz for ch 19 which was printed on the
cover from the previous owner. I can hear signal from generator well down to -110 dBm which should be .7 uV.

Thanks,Jim.

 

[rfradioconsult]

Hope you didn't pay a lot for the radio, sounds like a real hack job. There is very little AM activity on the 10 Meter band, good luck.