Connecting SB-610 to SB-101 for recv

[John P.]

Hi All,
 
   First, thanks to those taking interest and replying.
 
   For one person's query, the SB-610 is a scope that can monitor BOTH send and receive (IF = 3395kHz) signals.
 
   My philosophy on mods is to test EACH change that is incrementally added.  
 
   Thus, I first connected a 1pf cap to the tube's plate.  The SB-610 manual says either the grid or plate of the final IF amp.  From this point I ran a very very very short length of RG58 to one of the spare RCA jacks.
   Note that at this point I could only locate a disc (not mica) cap at a local parts store (not radio shack either).
   I did NOT connect the SB-610 yet as I have not installed the 3395 can and coil in it yet.
 
  The SB-610 manual says that a somewhat larger value cap may be needed for adequate vertical deflection.  But at this point I only wanted to get started and test as I go along.
 
  This simple connection DID adverselly affect the sensitivity.
 
  It is possible that I may need to "tweak" the tuning of the IF transformer.  Another option that was mentioned was a Hi-Z amp and I think that the SB-610 vertical amp may provide this.
 
 Until I install the coil and can (3395) in the SB-610, I wish to be sure that the "connection" to the RCA jack on the SB-101 does NOT affect the receiver adversely.
 
  I will though entertain and appreciate any additional info.
 
Thanks & 73's
 


      

-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.aspx?list=HEATH
To post - HEATH at LISTS.TEMPE.GOV
Archives - http://lists.tempe.gov/archives/HEATH.html