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Hi Brian, Congratulations on your "new" amp! I have one of those!? Just tune it using a watt meter for max output!? Drive it with no more than 40-50W so as not to exceed max grid current. You can

On Fri, Dec 6, 2024 at 01:08 PM, John K5MO wrote: > > I use the several Curtis keyers that are boatanchor proof, and can be set > for paddles or manual keying. > > > > > > Found on Ebay > >

Welcome to the group. I am not familiar with the Loudenboomer but, the settings of the amp would have to be determined experimentally since it is not or does not have a tuner or auto-tuner.? The

Hello all, I am a new member to the group but have been a HAM for awhile now. My main station now is a tentec omni VI with a HT45 amp. My callsign is W6BPT. I am looking forward to talking with

Hello all. I am excited to have found this group. My callsign is W6BPT. I recently acquired a hallicrafters ht-45 loudenboomer. I did the initial tuning via the downloadable manual and the amp works

When using a straight key, I do ok by listening to the sound of the key, but I can't do that with a bug. Back in the '50s I had a 100TH with 866 rectifiers. The humming of the transformer

A note: some old CW practice oscillators were set up to be keyed by a sample of RF from the transmitter to provide a side tone. For instance the Bud Radio oscillators. Should not be difficult to

Floyd, When you get all the kinks out of the side-tone mod, post a schematic of your project. Walt Cates, WD0GOF https://wd0gof.com/Hallicrafters A majority of acceptance is not proof of

I've just started to work on a CW sidetone technique for the HT-44.? Great idea of Walt's to use a diode and pin 8 of the octal plug to accomplish the keying.? I built a little LM555 based sidetone

Floyd, I have seen that a couple of times over the years. It boils down to the balance of all triodes in V3 and V4. The triodes in each tube need to be matched and V3 and V4 need to be matched. If

I had to replace those resistors in a HT44 also. I recall measuring the current and it was exceeding the dissipation of the 2 watt resistors. Unable to get my hands on 5 watt resistors, I put 10 watt

This is the second HT-44 where I've run into this problem.? I use the HT-44 heavily on CW and my current one has logged hundreds of QSOs in contests.? The other day it suddenly had no output on any

I used one of these in a SR 150 https://a.aliexpress.com/_mKYnQDt It was powerful enough to just parallel across the speaker lines and drive the speaker directly. 73 Don

Great suggestions. I have a external sidetone oscillator, and will give the “Pin #8” option a try. Once, I used a TO Keyer that I’d modified to accept a straight key input as an sidetone.

I use the several Curtis keyers that are boatanchor proof, and can be set for paddles or manual keying. [image: image.png] Found on Ebay John K5MO [email protected]> wrote:

The simplest way is to connect an external tone oscillator to pin 8 of J3 Through a diode. [cid:b3cca5bc-b43e-43a3-91b8-1e3628d7d5d5] Walt Cates, WD0GOF https://wd0gof.com/Hallicrafters A majority

Good day all I enjoy using various vintage "separates" on CW, with a bug. The common issue is what to do for sidetone when using a straight key or bug. Typically,? not music the Rx, and have a fast

Common practice back in the "good of days" when we were a lot more creative. Maybe original owner didn't want the preamp "box" hanging off the back end of the receiver and he had room inside the

Anyone seen one like this?? I bought this off eBay years ago and it's been sitting in a box until yesterday.? Took it out for a look and was surprised to find that I had two more tubes than shown in

Walt and Jacques - Thanks for your kind offers. It is nice to know I have options. For now the series capacitor combo that I have been tweaking is adequate. Drift is much better than before. So I am