[Hallicrafters] Question about Hallicrafters HT-45 Loudenboomer

[William Shadid]

Scott,

Some of this I think we discussed off line earlier but I do have and 
regularly use a Hallicrafters HT-45 Loudenboomer Amplifier. I run it 
with the orignal Hallicrafters P-45 Power Supply. (I even use 866A 
rectifier tubes!)

I have had this setup (with the HT-44 and SX-117) for over 30 years and 
it still works flawlessly. The HT-45 easily runs 600 watts output. I 
think it would do more but I am careful with the old 3-400Z final 
amplifier tube. It is the original tube supplied in this amplifier. The 
HT-45 has pretty consistent output from 80-10 meters. For a brief time I 
used the HT-45 with a solid state exciter that had no internal tuner 
quite successfully. Since the amplifier has very low drive requirements, 
there is an attenuator pad circuit described in the HT-45 manual that is 
a "must" for running this amplifier with a 100 watt exciter. In reality, 
however, the pad seems to provide a better load for the exciter as well. 
You will recall that the older Hallicrafters SSB exciters (HT-32, HT-37, 
HT-44, and maybe even the HT-30) were designed to work into 50-70 ohms. 
They did not have the wide loading range of some of their competition of 
the time.

73,

-Bill, WA9MXQ

Freeberg, Scott (STP) wrote:

>What do you think of the HT-45 Loudenboomer amplifier?  Is it a good performer?  I've never ever seen one in person in anyones shack or at hamfests.  Are they rare?  Are there any available on the list?
>
>I'm still looking to buy an HT-44/SX-117 (if you know of any for sale, I'd appreciate the lead), and thinking about getting an HT-45 to have a complete Hallicrafters setup.
>
>Just cuz I've never seen one doesn't mean much. I live up in EF Johnson country and I hardly ever see any Johnson equipment at the hamfests.  Strange huh?
>
>73, SCott WA9WFA
>www.qsl.net/wa9wfa
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