Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Poor poor little National HRO Senior L76
#33

After a bit of poking around I put power to it. Don't do this at home! Metered the HV current and stayed at 65ma or so. This was ok . All it wanted to do was motorboat and squeal. Joe didn't put the tube shields on it (did retube it as they where all missing when he got it). So put the shields on that got it calmed down to a nice hiss in the spkr. Plugged in the BC band coil set and  and it worked ... well sort of. Xtal filter controls would cause it to quit. Vol control was very noisy and no avc action/S meter movement.

After fussing with it for a while it got better and better. Using the xtal filter controls that settled down. Wiggling the tubes in there sockets helped too. Cleaned the contacts on the coil units. On the HRO all of the adjustment for the RF,Mixer,and Osc are made on the coil units not on the receiver. So the coil units are tuned for a particular chassis/serial #. I have the 4 stock coils for the L-76 (1.7 to 30mc) and that what I'm using in this one (7C).

So it's playing and pretty good at that. Does it need some work you bet.

Terry N3GTE


Messages In This Thread
RE: Poor poor little National HRO Senior L76 - by Radioroslyn - 05-26-2015, 10:25 PM
OT RCA 6T71 1950 TV - by Radioroslyn - 06-13-2015, 10:19 PM



Users browsing this thread: 14 Guest(s)
[-]
Recent Posts
An attempt to remove the Field Coil from a G speaker
The part/tool you get from HD is inside the plastic, like in a bubble.RodB — 07:17 PM
An attempt to remove the Field Coil from a G speaker
Got it. Still did not get the "Bubble" part.morzh — 07:10 PM
An attempt to remove the Field Coil from a G speaker
No Mike. Clear plastic from the packaging of items you buy at Home Depot, the ones you can't open without a hack saw or ...RodB — 05:48 PM
Philco 89 indicator light.
Well thankfully that did not happen.Jim Dutridge — 05:21 PM
An attempt to remove the Field Coil from a G speaker
Paul, thanks, Anything can help. Gary Thanks, lemme look! PS. Looked it up. They have kits and parts for mod...morzh — 02:45 PM
An attempt to remove the Field Coil from a G speaker
Paul, thanks, Anything can help. Gary Thanks, lemme look!morzh — 02:39 PM
46-1201 Trip Switch Spring
I deleted the other thread, as it was duplicate and did not have the photo. Please proceed with this one.morzh — 02:37 PM
46-1201 Trip Switch Spring
Hello, first post here, bear with me. I've been electronically refurbishing a 46-1201 that I received from a relative. ...ConcernedFeller — 01:46 PM
An attempt to remove the Field Coil from a G speaker
I am late to this post, amazing amount of work for a speaker Mike. You must like the challenge. I have a speaker from an...Paul Philco322 — 01:04 PM
An attempt to remove the Field Coil from a G speaker
Mike, give this site a look for your spider. Can't hurt. Take care and BE HEALTHY! -GaryGarySP — 12:41 PM

[-]
Who's Online
There are currently 10877 online users. [Complete List]
» 2 Member(s) | 10875 Guest(s)
AvatarAvatar

>