[AMRadio] sockets for 4cx250b/4x150


Rbethman rbethman at comcast.net
Sat Dec 2 18:53:25 EST 2006


Look at RF Parts.

Used to list/show a dual socket/chimney assembly.


Bob - N0DGN

Brett gazdzinski wrote:

>I worked W3MPG today, who was using a single
>4CX150f (26 volt fil) in screen modulated service.
>It sounded very good, and the entire modulator
>was a Berringer mic preamp gizmo.
>Marty said he was getting 40 watts carrier out at about 800
>volts, and you could run the tube up to 2000 volts and
>likely get what, 100 watts out?
>The 4CX250 series has 250 watts of plate dis, what would that
>be good for using screen modulation?
>
>A pair at 2000 volts might give a nice amount of power out,
>and very good audio, with no modulator or mod iron.
>
>Using variacs on the bias and screen volts, I suppose
>you could plate modulate it as well, if you modulate the screen
>as well as the plate.
>
>It seems like a pair could make a small 200/300 watt rig with
>good audio.
>
>I have a crap load of tubes, but only one socket and two
>chimneys.
>
>Fair radio used to sell them, where do you get them now?
>
>
>Brett
>N2DTS
>  
>
>______________________________________________________________
>AMRadio mailing list
>List Home: http://mailman.qth.net/mailman/listinfo/amradio
>Partner Website: http://www.amfone.net
>Help: http://mailman.qth.net/mmfaq.html
>Post: mailto:AMRadio at mailman.qth.net
>
>
>  
>

-- 
Bob - NØDGN
                       
+------------------------------------------------------------------+
|          \\"""//                                \\"""//          |
|           (@ @)       Bob Bethman - NØDGN        (@ @)           |
+-------oOOo-(_)-oOOo--------------------------oOOo-(_)-oOOo-------+
| NØDGN AMRadio Manassas, VA    |    REAL Tube Radio and AM        |
+-------------------------------+----------------------------------+
|       Manassas Radio - Home of Homemade Kielbasa & Pirogi        |
+-------------------------------+----------------------------------+
| Bob Bethman                \\\|///     " The absence of a danger |
| rbethman(at)comcast.net   \\ ~ ~ //      signal does *NOT* mean  |
|                           (/ @ @ /)      that everything is OK " |
+-------------------------oOOo-(_)-oOOo----------------------------+
|               <http://home.comcast.net/~rbethman>                |
| 1 BC-61ØI w/BC-614I,1 T-213/GRC-26 w/BC614I,1 '51 Collins R-390A |
|  SP-600/NR Type 159, Heath DX-60, Apache, Mohawk, SX-101, HT-32A |
+-------.oooO---Oooo.---------------------------.oooO---Oooo.------+
|       (    ) (    )                           (    ) (    )      |
|        \  (   )  /                             \  (   )  /       |
|         \ _) ( _/                               \ _) ( _/        |
+------------------------------------------------------------------+
|           Amateur Astronomer - Celestron Nexstar 8               |
|             12" f5 Dob coming soon!  Being built                 |
|                          Meade ETX-6Ø                            |
|           38 Deg 46'48.62"' N - 77 Deg 28'26.89" W               |
+------------------------------------------------------------------+
|   Opinions expressed are that of my own and do not necessarily   |
|         coincide with or represent those of ANYONE else          |
+--------------------------.oooO---Oooo.---------------------------+
|                          (    ) (    )                           |
|                           \  (   )  /                            |
|                            \ _) ( _/                             |
|ALL E-mail received and sent scanned by AVG & Norton System Works |
+------------------------------------------------------------------+


                            




More information about the AMRadio mailing list

This page last updated 22 Oct 2017.