[Milsurplus] 8223 and 8116 tube availablility

[Bill Carns]

An Exciter (like in this application) may not have the ability to tune a load or may be very low power.  For instance, Collins Radio adopted a standard where their exciters only put out 500 mW nominal – they would usually do a watt.  So, in some cases, exciter implies standard 50 ohm out and low drive.

 

In some other applications, exciter and transmitter are used interchangeably.  For instance if I drive my Collins 30S-1 with a 32S-3 transmitter that can tune a load up to about a 3:1 VSWR circle and puts out a nominal useable 100 watts, in that application, and tuned to 50 ohms and reduced in output to about 60 watts, it is often called the exciter..

 

So – no wonder you are a little confused.

 

Good luck on the tubes.

 

Email Scott Johnson at scottjohnson1 at cox.net <mailto:scottjohnson1 at cox.net>  and he may be able to tell you more about tube availability if he does not see this.  I think he is on this list.

 

Bill Carns, N7OTQ (Trustee K0CXX)

Past President, Collins Collectors Association

Founding Board, Collins Radio Heritage Group

Editor, Signal Magazine

Wimberley, TX

512 618 2762  (Cell)

512 847 7010  (Home)

 

 

 

From: Milsurplus [mailto:milsurplus-bounces at mailman.qth.net] On Behalf Of Reuben Popp
Sent: Friday, January 01, 2016 10:50 AM
To: Military Surplus Mail List <milsurplus at mailman.qth.net>
Subject: [Milsurplus] 8223 and 8116 tube availablility

 

Hey guys,

 

Happy new year to all.  Hopefully everyone had a fun and safe one!

 

Today's question concerns the two tubes in the subject.  They also are the only tubes used in the AM-3007 amplifier (used along with the T-827 exciter and RT-816 transceiver).  Now, my thought/hope was to assemble a complete AN/WRC-1 station, but it seems that the 8116 tube is pretty darn rare, at least on a cursory search online.

 

Am I searching in the wrong areas, or am I right in thinking that tube is tough to get (and no real suitable replacement), leaving me potentially hanging dry in using an AM-3007?

 

Thanks again all,

Reuben

 

PS As someone still learning, can someone please explain to me the difference between an exciter and a transmitter in the WRC-1 application?  I apologize if I might have asked this before... If I did, it's obviously still not sinking in.

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