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Also can be found in classified by Grumpy
Ham Radio Ten Meter multi Mode: FM, CW, SB, AM President HR-2600 $250.00 Hub for phone/communication SynOptics 2803 In New York City: Manhattan Computers &...
October 16th 12 05:23 AM
by Grumpy Go to last post
2 1,379
1 Attachment(s) EL34 suppressor grid (g3) characteristics by Alejandro Lieber[_3_]
I am thinking in building an AM transmitter for 7.1 Mhz (40 meters) using a EL34 in class C as final. The idea is to modulate it by varying the negative...
(Multi-page thread 1 2)
October 14th 12 01:07 PM
by Alejandro Lieber[_3_] Go to last post
16 6,545
Which way would You try to sell a 300B SE? by Fabio Berutti[_2_]
Dear fellow Rodents, I have not posted anything for a few years but it's nice to see that ol'guys are still around. I'd need just a suggestion: I spent so...
October 8th 12 11:03 PM
by Patrick Turner Go to last post
1 1,155
What is a 6L6 Radiotron? by JimK
It is clear with a roound hat-looking getter on one side of the bottom. Only marking at all is ^L^GC in white, and below it in white, RADIOTRON written in an...
October 8th 12 03:09 AM
by Phil Allison[_3_] Go to last post
1 754
1 Attachment(s) Is this test result OK? by JimK
I'm testing a Sylvania 6bq7a on a TV-7. Triode 1 jumps up to 50 or even 70, then drifts back down to 43. Triode 2 consistently goes to 43 and stops. The longer...
October 5th 12 03:36 PM
by John L Stewart Go to last post
1 940
3 Attachment(s) Bridge or Center Tap? by Paul D. Spiegel
For my next project I have acquired a transformer with two identical 450v secondary windings. I could put the windings in parallel and use a bridge...
(Multi-page thread 1 2)
September 30th 12 01:17 AM
by Phil Allison[_3_] Go to last post
12 1,947
Rarest Challenger Ever? by GreenTone007
I have a Bogen Challenger CHA 75A Pa amplifier dated 1974, I need a schematic, ive found the schem. for the CHA 75 but not 75A, it has 2 power tubes instead of...
September 19th 12 04:22 AM
by GreenTone007 Go to last post
1 923
1 Attachment(s) horizontal tubes by ZeeTso[_3_]
hi! i have no previous experience in building tube amps, and for my first project i want to build small 5W guitar/bass amp head. it will be simplified...
September 15th 12 03:25 PM
by John L Stewart Go to last post
5 1,305
Harman Kardon Citation 1 Kit Value by L.K. Brown
I have an unassembled Harman Kardon Citation1 kit, still in original boxes, Telefunken tubes. I plan to sell it but not sure what a fair value would be. I...
September 10th 12 01:31 AM
by L.K. Brown Go to last post
0 1,053
Harman Kardon FM100 - early version? by legg
I'm working on a Harman Kardon FM100 "Counterpoint II" that shows signifigant variations, internally, from the documentation provided by SAM's HF3 repair and...
(Multi-page thread 1 2)
September 2nd 12 02:36 PM
by legg Go to last post
14 2,528
What is this matched quad of new RCA 6L6GC tubes worth? by JimK
I want to sell these to help finance buying a new amp. Looking on Ebay I see they are not the holy grail RCA which are the black plates. Mine have gray plates,...
September 2nd 12 05:20 AM
by flipper Go to last post
4 1,265
Hammond M3 organ help, please by Steve Zettel
Hi, I've run across a Hammond M3 with the auxiliary speaker cabinet (not a Leslie, darn it!) for $150. Looks to be in very good condition, but like a lot of...
August 30th 12 03:46 PM
by stilldivin Go to last post
7 4,273
golden tube bias by [email protected]
On Friday, February 15, 2002 6:40:32 AM UTC-10, thh wrote: > does any one have a manual for a golden tube se40? i need to do a bias and > have misplaced the...
August 28th 12 08:44 PM
by [email protected] Go to last post
0 1,066
Tuning indicator without magic eye or meter by Patrick Turner
Probably because I am slightly pefectionist, if something goes wrong with any bit of my own gear, I'm usually keen to fix it and improve on it if possible, and...
August 24th 12 02:41 PM
by Patrick Turner Go to last post
0 1,435
2 Attachment(s) Boosted Triode by John L Stewart
Here is a great example of someone thinking ouside the box. Refer to the cct. The hookup was suggested by Dave Cuthbert of Boise, ID in 2003 & published in EDN...
August 23rd 12 11:59 PM
by Patrick Turner Go to last post
8 1,848
System Advice by [email protected]
Through an estate sale I recently came into two monoblock 9W KT88 Qucksilver Amps and two Mcintosh XR 1051 speakers. I have connected them together but the...
August 11th 12 08:30 PM
by Roger Jones Go to last post
4 1,369
Turneraudio website just re-posted by Patrick Turner
I have a message to the 10 ppl who have read my site since 2000. I have just posted up a fresh copy of my web site and links which used to work may not all...
August 11th 12 08:22 PM
by Roger Jones Go to last post
1 1,111
Disc ceramic vintage caps by Alex Pogossov
Hello, In 1960's japanese radio manufacturers (Pioneer, Lafayette and others) started using disc ceramic caps in their radios and tuners-amplifiers. (AM...
July 28th 12 08:48 AM
by GRe Go to last post
1 1,081
Basic magnetic phenomena explained by Patrick Turner
Hi all, Hardly anyone understands magnetism. For those inclined to read more, you could do well to read up...
(Multi-page thread 1 2)
July 17th 12 03:09 AM
by Lord Valve Go to last post
14 2,147
4 Attachment(s) "Beam Me Up, Scotty" (Beamus) AM Transmitter -- first prototype by flipper
Okay, so I like to make up cutesy names :) I wanted to do 'something' with a 6ME8 so I tried using it for an AM transmitter and the first prototype works...
(Multi-page thread 1 2 3 ... Last Page)
July 16th 12 03:07 PM
by Patrick Turner Go to last post
85 11,264
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