"Jim Shorney" <[EMAIL PROTECTED]> made an utterence to the drakelist gang ---------------------------------------------------------------------- On Tue, 04 Jan 2005 18:41:16 -0600, Mahlon Haunschild wrote:
>In my Heathkit SB-102 manual someone penciled in that subbing 6HS6s for >the 6AU6s used in the IF amplifiers would require a re-peak of the IF >(no kidding) but might overload in the presence of high signal levels >(also no kidding). My understanding is that the Heath HW/SB-10x design originally used 6AU6's, but went to the 6HS6 possibly sometime in the HW-101 era. A published "mod" for the HW-101 was to drop in the cooler-running 6AU6's in place of the 6HS6's for extended tube life at the expense of a little bit of gain. I did this to my HW-101 years ago, and it worked fine. FWIW. JANUARY 14, 1977 HW-101 BULLETIN NO: SSB TRANSCEIVER HW-101-12 IMPROPERLY MANUFACTURED 6HS6 TUBES Some 6HS6 tubes supplied with the HW-101 were improperly manufactured with the suppressor grid and cathode pin outs interchanged. These tubes will glow brightlywhen power is applied. All of these tubes, with this trouble, have been removed from stock. Any new 6HS6 tubes ordered from parts replacement will be okay. Some HW-101 kits will tgemporarily have 6AU6 tubes substituted for the 6HS6 until production quantities of the good tubes are available. -- Jim Shorney -->.<--Put complaints in this box jshorney (at) inebraska.com nu0c (at) amsat.org Ham Radio NU0C Lincoln, NE, USA EN10ps http://incolor.inetnebr.com/jshorney/ ---------------------------------------------------------------------- On Behalf of "Jim Shorney" <[EMAIL PROTECTED]> Submissions: drakelist@www.zerobeat.net Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: http://www.zerobeat.net Brought to you courtesy of TLCHost.net http://www.tlchost.net/ ----------------------------------------------------------------------
