[HBR] Debating HR 13C

[Whitebear1122]

BIll, I don't' know too much but I'll tell you what I've read and heard 2nd and 3rd hand.  I am in the process of building an HBR-13 and looked into the regen issue. 

I've heard/read that the HBR-13 center dial design was Alex Stewarts idea to give the HBR a nice balanced professional look.   For some unknown reason he was unable to get the regen IF's to oscillate as expected.  He consulted with Ted and eventually Ted got ahold of the receiver and was also unable to get the regen to work right.  There was much speculation but as far as I know they never were able to really explain it nor resolve it.  I thought I heard that Ted finally speculated that it had to do with the physical placement of the circuitry on the chassis and interactions with chassis and the cabinet.  Vague for sure.  

I was going to build a 13C but was given advice to optimize the receiver by putting the Eddystone and sub chassis on the left side of the front panel.  I'll let you know how it works out.  I do have a 13C built by someone else and it is a wonderful radio but the amplifiers to not oscillate as aggressively if at all as my HBR16. 

I have pictures of my 13 project up on my qrz.com page (wa9wfa).  The pictures show it  as of last summer when I completed the mechanical milling and drilling, mounting the Eddystone to the front panel to see if things line up, and just setting the IF transformers and tube sockets in the holes, pots on the chassis while checking for clearance.  No I'm not planning on having the chassis mounted pots adjust from the bottom hi hi.  I just set the pots in the holes to make sure there was clearance.  :)

I just started wiring a week ago.  I finished wiring the RF sub chassis this past weekend and now I'm mounting it to the main chassis.  This is my very first point to point radio project that I've ever built so it's a challenge for me.  I also had to learn how to use a milling machine to mill out the front panel and chassis.  
 
73, Scott WA9WFA