[AMRadio] Looking for Documentation on Gross Transmitter

Don Merz don at thedjbrothers.com
Mon Aug 28 17:23:37 EDT 2006

It's very unlikely that the Gross CP-100 ever used a
TZ20. The Taylor TZ-series tubes were designed for
grounded grid operation and usually used in pairs or

Also, Gross seems to have labeled it's transmitters
with a model number that was intended to indicate the
watts input of the rig. and a CP-100 with a TZ-20
final does not fit their formula. The 838 is a 100
watt tube and it does fit the formula--though Gross
seems to have preferred non-RCA tubes as finals. Maybe
Taylor made an 838 or an equivalent?

73, Don M.

--- "Freeberg, Scott (STP)"
<Scott.Freeberg at guidant.com> wrote:

> Mark W1EOF found these URL's on the web of my
> transmitter.
> http://www.universal-radio.com/used/ub36lrg.jpg
> http://www.universal-radio.com/used/Ub36rear.jpg
> http://www.universal-radio.com/used/ub36lbl.jpg
> This is the transmitter that I bought from
> Universal. 
> In the rear photo you can just barely see the white
> open line feeder insulators
> on the right top of the cabinet, and the PA coil,
> but nothing in between.  
> I found a website that lists PA tubes for a zillion
> different radio's and it
> states the CP-100 originally came with a Taylor
> TZ-20.  This one came with
> an 838.  
> 73, Scott WA9WFA
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