[R-390] Choice of 390As [second try]

[Tom Norris]

For whatever reason, the listserver thought this was spam. Let us
try again.

>The last several 390A's I've had had all matching modules. My '67 EAC and
>my '63 Imperial both have matching modules with matching contract numbers.
>The third radio of that bunch - a '55 Collins - was all matching as 
>well, it even
>had Collins tube shields. The 2 I have on the back burner are a '62 Amelco
>(in pieces) and another '63 Imperial.  BTW, while the tags say "Imperial"
>the stamps on the innards say "Teledyne Systems" on both of these.
>
>I could kick myself for swapping off a 1960 EAC with ceramic IF filters!
>
>How do the different radios compare to one another? The '55 Collins never did
>sound "right" plus it was fairly dumb, several microvolts. The rest? 
>Pretty much
>equal to one another after alignment,  < 1 microvolt sensitivity. 
>Build quality?
>All were equal that I could tell, though the '67 seems to have 
>"updated" standoffs
>and wiring. If the Collins had thicker gearing than the rest, I 
>never noticed it.
>
>
>73
>
>Tom
>
>My uncle drove a '63 Imperial. It had 4 wheels and no 3TF7 to worry 
>about, though.