[Central-Electronics] 10B Exciter

[Jim Candela]

Ooops!

   Something I said about crystals is wrong. For CW you can use direct frequency crystals (such as Novice use), and these do bypass the balanced modulator. This eliminates any voice operation. What I did miss though is you can offset the crystal + or - from 9 Mhz to run phone on the ham bands. Pages 13-14 clarifies this in the 20A Instruction Manual.

Regards,
Jim
WD5JKO


----- Original Message ----
From: Jim Candela <jcandela at prodigy.net>
To: Arthur Delibert <radio75a3 at msn.com>; telmore1964 at yahoo.com; central-electronics at mailman.qth.net
Sent: Saturday, October 17, 2009 8:10:51 AM
Subject: Re: [Central-Electronics] 10B Exciter

Hi All,

  The CE Reflector has been quiet for too long..

Those VFO's for the 10B and 20A are available. I see them on Ebay fairly often. Also look for the rare Lakeshore Bandhopper VFO, a superior product that works on the CE gear with NO adapting required. The BC-458 Command transmitter is the basis for all these VFO's. Also any VFO with a 5-5.5 Mhz output will give you 80M and 20M so long as the output amplitude is high enough, so solid state VFO's likely need an amplifier.

Look again at using a crystal on these CE rigs. The crystal option is for CW only since it bypasses the voice balanced modulator circuitry.

Good Luck,
Jim 
WD5JKO


----- Original Message ----
From: Arthur Delibert <radio75a3 at msn.com>
To: telmore1964 at yahoo.com; central-electronics at mailman.qth.net
Sent: Saturday, October 17, 2009 7:23:06 AM
Subject: Re: [Central-Electronics] 10B Exciter


I think you can use surplus FT-243 crystals. By the way, the VFOs are around. I've seen a couple at hamfests over the last two years. May need some work, though. I've also wondered about using a stable signal generator as a VFO, but I haven't tried it yet.



Art Delibert

KB3FJO



> Date: Thu, 15 Oct 2009 21:42:30 -0700
> From: telmore1964 at yahoo.com
> To: central-electronics at mailman.qth.net
> Subject: [Central-Electronics] 10B Exciter
> 
> Hello, I have a chance to pick up a 10B exciter with a 20 meter coil set in it already. Does anyone know the winding specs if I want to build an 80 meter set of coils up and a source to order coil forms for this transmitter? Also I assume the chance of finding a matching VFO is pretty nil so does anyone know if International Crystal has the information for grinding crystals for CE products?
> 
> 
> 
> 
> Thanks 
> -Tom / KA1NVZ
> 
> 
> 
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