DX100B Restoration

Brian Carling bcarling at CFL.RR.COM
Wed Mar 2 15:32:47 EST 2005

Hey this sounds GREAT Jim...

I am keen to try most if not ALL of these mods here.
I dragged the DX100 out of the case today, and so far
I found that the 12BY7 is good so will start by checking the voltages 
and wiring to the crystal osc. Will look at all the PS voltages too.
I now have a shopping list to take to the store.

Will keep you all advised on the progress.

73 de AF4K, Bry

On 2 Mar 2005 at 12:03, K4deejim at aol.com wrote:

> Brian, I have found the 100B a very rewarding project. This is what I
> did : Removed the HV rectifiers,installed 6 kVdiodes , SS the bias
> supply, put PTT in with 6 VDC DPDT in pwr sply area and another in PA
> grid area for ant transfer and rx mute . Another 115 VAC relay under
> where 5R4 sockets were to control plate xfnr primary with separate
> fuse holder in 5R4 vent hole in chassis . All relays were obtained at
> Skyjunque in W.P. . SSB coax fitting used for RX ant . Use extra 6 vac
> winding for 6vdc supply . Drop reg 150 to 105 as in Apache VFO . ,
> removed green lens behind VFO dial and change6v lamp to 12v . Change A
> F .1 bypass caps to 20 mfd, couling caps to ..01 , !st AF amp grid to
> 3 meg with 47 k and .01 mfd in series with mic. Put 5k 10W res in
> series with drive pot to Gnd , puts less load on pot. I hope I gave
> you some ideas. I find my $ 30 investment very stable and very
> respectable on the air. Cost of mods not included , Have fun ! Jim
> -K4DEE

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