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HT-9
开云体育I used to have that information in my head...... The round meter ones are the last production of the HT9. The square meter HT9's were the first production runs.? Look at some of the internal parts for product numbers and that would be a clue. Hope this helps. mike On 10/5/2024 8:18 AM, Tom Smith wrote:
I have a 4 digit serial number around 4500. It’s got a black cabinet and has round Hallicrafters marked meters recessed in the front panel. |
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Hi Mike,
Thanks for the reply. I’ve got 4 HT-9s and they all have round meters but the meter case flanges on all of them have the typical meter case with the flange on the outside of the case front. The meters on this HT-9 is made with the meter flanges on the inside of the case. The cabinets on my other 3 are a greenish grey, almost camouflage looking.
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I was hoping that Hallicrafters might have kept some records of production runs/dates. I’ll have to check the iron to see if there is any clues on production dates.
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Tom N5AMA |
开云体育Tom, I hate to admit I have two square meter HT9's and two round
meter HT9's. My first transmitter was one of the square style and
I still have it. I never realized they made the round meter ones
until later in life. So I had to have some of those. Never know
when one will need some spare parts. mike K7LYF PS.... This is my original call from early on. On 10/6/2024 3:36 PM, Tom Smith wrote:
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Mike, it’s a sickness. My ace and 3 of a kind beats your ace and 2 of a kind.LOL
If I can figure how to send you some photos of my HT-9s, I’ll do it. One of my square meter transmitters has some mods and one of them has a extra hole drilled next to the output connector (for a female receiver connector) but the other two are in original condition and all of them work. It’s hard to justify 3 parts units (even with all of them working), but they were purchased 2 at a time as all or nothing. The second purchase was for tuning units and tank coils but came with two nice transmitters. I was willing to give the asking price for just the tuning units and coils but there again the requirement was all or nothing. I had been using a homebrew tuning unit I put together for 75m.
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Tom n5ama |
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Have fun On Mon, Oct 7, 2024, 7:57 AM Tom Smith via <n5ama=[email protected]> wrote:
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The HT-9 and its lower-powered sibling, the HT-6, were both introduced as ham transmitters in the late 1930s. Production of the HT-9 continued into the 1940s as the military adopted it for use in WWII along with the HT-4 (better known as the BC-610). HT-9s were sold by retailers as military surplus in the late 1940s and very early ‘50s. The cabinet colors and meter styles reflect the transition from civilian to military production.
On Saturday, October 5, 2024 at 10:18:48 AM CDT, Tom Smith <n5ama@...> wrote:
I have a 4 digit serial number around 4500. It’s got a black cabinet and has round Hallicrafters marked meters recessed in the front panel. Any wild guess on what year this transmitter was made? Thanks, Tom N5AMA |
开云体育Tom, my first one had blown one of the transformers before I acquired it. So it had an extra transformer mounted inside the cabinet. My folks bought it for me as I? was not old enough to drive or make any money. I made friends with the engineer at the only radio station in town and he drew up a modulator mod using 6146's. That did away with 4 6L6's with 2? 6146's. It came with a home brewed vfo for 80 meters. I think it was based on a 6AU6. I'll have to find the drawing to verify that though. I know glow in the dark stuff is a sickness, bit it keeps me off the street and other related trouble areas. My illness does not stop with Hallicrafters named items either! cheers! mike On 10/7/2024 5:57 AM, Tom Smith wrote:
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It’s been suggested that I look for component codes but if they mean anything relative to manufacturing dates, it’s a mystery to me.
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Tom N5AMA On Oct 5, 2024, at 10:18?AM, THOMAS SMITH <n5ama@...> wrote: |
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I think what you are asking is does anyone know how to read
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component codes for dating information? I do not but others here might and should post what they know or else where to find it. Dating equipment is sometimes very difficult. I found, for instance, that Bausch & Lomb, a major manufacturer of optical equipment in the U.S. used a different serial number system for every different lens so, even if you have serial numbers for one type of lens its meaningless for others. They are not the only ones. Some companies deliberately scrambled serial numbers to disguise manufacturing dates to make it more difficult to establish prices on the basis that it reduced competition with new equipment. Makes no sense but was done and make historical research much more difficult. On 10/9/2024 6:06 PM, Tom Smith wrote: It’s been suggested that I look for component codes but if they mean --
Richard Knoppow Los Angeles WB6KBL SKCC 19998 |
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Thanks Richard. I’ll go through the transmitters and make note on any numbers on components in the event someone can help with the ID. I know the relative age between the transmitters but it would be nice to know the approximate build date on the oldest one with the recessed round panel meters.
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Thanks again
Tom N5AMA |
开云体育Hi Richard, I think you should give those “forensic” projects to one of those “AI” aps to solve. The answer should be back in no-time if they are any good. ? From: [email protected] [mailto:[email protected]] On Behalf Of Richard Knoppow ? ?………………..Makes no sense but was done and make historical -- don??? va3drl |
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This serial number HT-9 appears to have some unusual things such as the meters and also internal marks on the chassis. The normal nomenclature on the crystal and tuner sockets is different from my other HT-9 units. It has the same orange looking dot positioned next to the socket but it has a two digit code that appears original and doesn’t match anything in the manual. Is it possible that this unit was one of those made for the government and the sockets were marked for a manual that went with the “government equipment”? In all other aspects, the transmitter is identical.
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Is there a way to attach photos to these messages to help in identifying?
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Thanks,
Tom N5AMA |
don Root
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