[ARC5] Using WSJT-X with R-23 or BC-453B

[Kenneth G. Gordon]

On 2 Nov 2017 at 16:48, Scott Robinson wrote:

> Well, the RF gain changes the grid bias on the front end stages, 
> changing the B+  a little, so no surprise here.

True.

> Now, about 6K8 and 6J8 converter tubes: these were invented to fix the 
> horrible AVC pulling that 6A8s do. In one 1939 radio (GE-G-106, for 
> those interested in wood radios) at 18 MHz the AVC would pull the 6A8 LO 
> by 20 KHz, and substituting a 6K8 reduced that to 1 KHz. The radio has 
> an RF amp, so the converter noise is of less significance.

All very true. But the 6/12K8 is still a POS in my "humble" opinion.

The "ARC-5" receivers exhibit unusual sensitivity despite the 12K8, though.

Ken W7EKB

---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus