[R-390] saga cont pt 12

[ka9egw at britewerkz.com]

Thanx!
Brian

-----Original Message-----
From: Craig C Heaton [mailto:wd8kdg at att.net]
Sent: Monday, September 27, 2010 6:33 PM
To: ka9egw at britewerkz.com; r-390 at mailman.qth.net
Subject: RE: [R-390] saga cont pt 12


3 or 4 threads sounds gud! The silver micas are inside the RF cans.

Craig,



-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of ka9egw at britewerkz.com
Sent: Monday, September 27, 2010 3:21 PM
To: Craig C Heaton; r-390 at mailman.qth.net
Subject: Re: [R-390] saga cont pt 12

After some can-swapping, I can report that all my slugs have at least 3 or 4
threads showing above the rack...:-)
73 de KA9EGW

-----Original Message-----
From: Craig C Heaton [mailto:wd8kdg at att.net]
Sent: Monday, September 27, 2010 3:34 PM
To: ka9egw at britewerkz.com; r-390 at mailman.qth.net
Subject: RE: [R-390] saga cont pt 12


Brian,

On mine, from memory isn't it 68 ohm resistors? I think you will find the
2nd ones in from the front panel have the least effect, 3rd one in the most,
4th one from the front panel a good 2nd place.


Craig,

PS: Look out for the slugs! If you find one that is adjusted just about to
come out of the rack, a silver mica in that can is bad. Another hint on bad
silver mica caps in those cans is when, no matter what, one octave loses its
sensitivity. You go back get it peaked again and several days later that
octave has gone south. Most cases, just one RF can is the culprit.




-----Original Message-----
From: r-390-bounces at mailman.qth.net [mailto:r-390-bounces at mailman.qth.net]
On Behalf Of ka9egw at britewerkz.com
Sent: Monday, September 27, 2010 11:51 AM
To: r-390 at mailman.qth.net
Subject: [R-390] saga cont pt 12

Well, it's coming together.  I got all but the highest octave aligned after
many, many iterations of back-and-forth; the first octave I was wondering if
something was drifting.  It looks like this may be a fairly sensitive
receiver as R390A's go.

One thing--on the 16-32 octave, tuning the front can has no effect feeding
it balanced, this with either of 2 front cans, although there's a very
definite peak feeding it unbalanced.  Is this normal behavior, or should I
expect it to resolve itslef after my 62-ohm resitors arrive and I do the
frontmost-trimmer balance alignment?

73, Brian KA9EGW

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