model 19 - Printable Version
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model 19 - vinzer - 07-30-2011
Just got done recaping and adjusting IF and trimers dosen't seem sensitive as some of my other radios with tuned rf amps is that normal for a model 19b code 126?
Re: model 19 - rghines1 - 07-31-2011
Should be as sensitive as your other radios. Start by checking the voltages on the tube pins, etc for anything out of range. May have a really weak tube somewhere. Signal injection may be needed if all else fails. Richard
Re: model 19 - Ron Ramirez - 07-31-2011
And don't forget those coils...they usually have, or develop, open primaries.
A model 19 should be a very sensitive, very good performing radio when properly restored. If you don't need a lot of audio power but want good sensitivity and selectivity, a model 19 or 89 is an excellent choice for a vintage radio.
Re: model 19 - vinzer - 07-31-2011
Already rewound two of the coils could be a weak tube tried the 80 and 42 out of my 84b no change don't have any 44 or 36 tubes to try radio works about like a good 5 tube radio like say a 37-610 but not as good as my sparton 1466 or GE SR II. I may buy a 36 and two 44 tubes to see if that helps
Thanks
Re: model 19 - Radioroslyn - 07-31-2011
You could buy a tube tester.
Terry
Re: model 19 - exray - 07-31-2011
vinzer Wrote:Already rewound two of the coils
Let's address that. How closely did you replicate the originals?
Re: model 19 - vinzer - 07-31-2011
Used to have a tube tester but gave it away last time we moved.
Counted the turns and wound them the same way as they were.
Re: model 19 - exray - 08-01-2011
vinzer Wrote:Counted the turns and wound them the same way as they were.
Same wire gauge, same winding length?
Re: model 19 - vinzer - 08-02-2011
used same wire I used on a model 84 looked about same but don't the size.
Radio works ok just thought it could be a little better.
Re: model 19 - AI2V - 08-06-2011
Your windings may not be phased correctly; try reversing the leads to your rewound coils.
Before you buy more tubes, measure and record the voltages on your tube sockets and get back to us with the results; it can probably be narrowed down to a single component with voltage data.
Do you have an oscilloscope? It will tell you quickly if your oscillator is running- and often it isn't.
I love my 19; it's my most used radio at present.
Re: model 19 - vinzer - 08-06-2011
I will check the voltages phase of coil wires and see what i find. Radio works so oscillator is running.
Re: model 19 - vinzer - 08-06-2011
Checked voltages found them all low . The lug that goes between the cardboard and filter cap was shorted to ground. Works much better now. Thanks for all the help.