[Hallicrafters] SX-28A 1st RF tube replacement

[Ken Kaplan]

Waldo et al,

Go to http://www.qsl.net/kb7rgg/radio/update-sx28.html to view the CQ articles on updating 
the SX-28.

73 Ken kb7rgg

> A friend has a SX-28A in which the first RF tube (6AB7) has been  
> replaced with a miniature 6AK5 tube.  I seem to recall an article on  
> the change and have looked at the archives but nothing jumped out.   
> Does anyone recall of the article and can point me in the right  
> direction?  Thanks.
> 73,  Skip  W7WGM