[Heathkit] Resistance in IF CANs in the SB-610 Scope

[Kenneth G. Gordon]

On 10 Jan 2007 at 10:43, carl lowry wrote:

> Generator set at 455kc with no Gain factor. Had another Heathkit 455kc
> IF CAN ( p/n 40-746 ) & put my ohm meter across the 2 pins where I got
> 10.0 ohms. Put my ohm meter across pins #1 & #2 on the Miller IF CAN
> where I got 25.0 ohms. Also put my ohm meter across pins #3 & #4 on
> the Miller CAN & again got 25.0 ohms. Is the higher ohms that i'm
> getting on the Miller CAN making that much difference on my CRT
> pattern height ?

Higher ohms indicates lower "Q", thus wider bandwidth, thus lower 
"gain". Lower ohms indicates the reverse.

The answer to your question above is "yes".

In this case, the Miller can has much lower "Q" and thus "gain" (signal 
through it) than the Heathkit unit. I have forgotten the exact 
relationship, but it is easily found in any handbook. I believe it might be 
logarithmic, so that a difference of over twice the resistance would 
indicate a much greater difference in "Q", etc.

Ken Gordon W7EKB