[Hallicrafters] SX101 MK2 Resto (ref URM-25)

[Carl]

Learning to rebuild the test equipment should be the first step before 
tackling a complicated receiver. Its a great learning curve, very little is 
complicated or expensive.
The hardest part in a URM-25D is getting it apart and there are forums 
dedicated to just test equipment.

Carl
KM1H



----- Original Message ----- 
From: "Walt Cates" <cateswa at msn.com>
To: "hallicrafters" <hallicrafters at mailman.qth.net>
Sent: Wednesday, November 16, 2011 12:02 PM
Subject: Re: [Hallicrafters] SX101 MK2 Resto (ref URM-25)


> My personal observation.
>
> When setting up a test bench for radio work the single most important need 
> for an accurate, reliable test equipment unit is the signal generator. A 
> clean signal without trash and harmonics and an accurately calibrated 
> signal out put level is paramount. The true measure of receiver 
> performance is the S+N:N ratio, the AGC threshold and the AGC figure of 
> merit. Unless you are sure your source is clean and you know exactly what 
> the generator out put level is, these measurements are useless.
>
> You can skimp on every thing else, but you better bite the bullet and 
> spend some money on the signal generator. The URM-25 is the benchmark for 
> LF to HF signal generators. To match its quality in contemporary equipment 
> you will need to spend in excess of $1500.
>
> Best Regards, Walt Cates, WD0GOF, 
> http://www.myhamshack.com/WD0GOF/<http://www.myhamshack.com/WD0GOF/>
> A veteran is someone who, at one point in his life, wrote a blank check 
> made payable to 'The  United  States of America' for  an amount of  'up to 
> and including my life.'
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