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Author Topic: T1154  (Read 4856 times)
GW3OQK
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Posts: 155




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« on: August 22, 2012, 10:05:20 AM »

I found nothing about this old set on the forum, though there's plenty of info on the web. I have one I put on air every few weeks for CW, and occasional AM on 80 or 40m. The CW chirp was too much for some of my contacts, so I have devised some simple mods to reduce it, but definitely not get rid of it because I LIKE the chirp on an old radio. The higher the freq the greater the chirp and its really unusable on 14 MHz. How those WW2 wops managed I dont know. Should anyone else want to get one on air let me say its simple and a delight to do, and I love using it. If you know the T1154 I have the big keying relay energised all the time and key the bias which is not a mod, its ready for it.

The PSU is home made and keeps the shack warm. I only use it on 800v HT, not 1200 so it gives about 40w out. 10w on AM. Anyone else using the set?

The R1155 alongside isnt so good on our bands and I generally use a 1950s naval rx with 700 Hz xtal filter.  I first had T1154 for about £5 in 1958 and used as source of parts for my home brew rig. Always looking for some chirp and an interesting QSO, 73. Picture on QRZ.

Andrew GW3OQK
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G3RZP
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Posts: 4731




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« Reply #1 on: August 23, 2012, 01:46:19 AM »

Have a look at the Vintage and Military Amateur Radio Society website. Quite a few VMARS members have 1154s.
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G1DNZ
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Posts: 11




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« Reply #2 on: November 16, 2012, 09:53:55 AM »

I would be intrested to know the current required at 800v as i have a T1154 +R1155 witch i take to shows ,as yet the power supply for the TX has been on hold due to lack of a suitable 1200v transformer.
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G3RZP
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Posts: 4731




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« Reply #3 on: November 17, 2012, 10:34:32 AM »

Would a 1000-0-1000 be of any use?

If so, contact me at peter.chadwickatties.itu.int with @replacing at
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G1DNZ
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Posts: 11




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« Reply #4 on: November 17, 2012, 04:19:53 PM »

That would work nicely ,mesage sent looks like 2013 show season could be intresting ,my 12 year old daughter is trying for her foundation licence, we may be able to work PRC 320 to t1154/r1155
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GW3OQK
Member

Posts: 155




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« Reply #5 on: November 18, 2012, 05:48:27 AM »

Its about 150 mA I estimate. I used a 350 - 0 - 350 approx. I could send you a scan of my psu schematic if you emailed me. Its a great project to put on the air and if you fancy a cw qso on 80 or 160 let me know. The psu is above the 1154 on my QRZ page.

I did a few simple mods inside to get the speech better. 25uF across the audio valve cathode res. http://www.chavfreezone.me.uk/history76.html was the most useful help.

The T1154 is just waiting for use on the 472 kHz band. Doing 25w into 50 ohms at the moment.

Best of luck
Andrew GW3OQK
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G3RZP
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Posts: 4731




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« Reply #6 on: November 18, 2012, 08:36:38 AM »

No email received. 1000-0-1000 xformer available, really needs collecting Swindon area, but maybe a relay job could get it to you.

I got it for free, you get it the same if I don't have to pay shipping.....
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G1DNZ
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Posts: 11




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« Reply #7 on: November 18, 2012, 02:01:16 PM »

sorry been chasing around the country on jobs today  will try and mail you this evening
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G1DNZ
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Posts: 11




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« Reply #8 on: November 18, 2012, 02:58:44 PM »

mesage keeps failing so pm sent
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G1DNZ
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Posts: 11




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« Reply #9 on: November 20, 2012, 03:08:05 AM »

mail sent thanks
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G1DNZ
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Posts: 11




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« Reply #10 on: December 02, 2012, 05:56:01 AM »

Thanks for the pointers and help ,have sorted most of the parts needed from my junk pile .Special thanks to G3rzp for the offer of the transformer ,
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G1DNZ
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Posts: 11




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« Reply #11 on: February 28, 2013, 10:11:17 AM »

I need to thank G3RZP for the transformer and report that i have built the rectifier and tested the out put .It giving me 1100V be for smoothing .need to sort a sutable smoothing setup next thanks.
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G3RZP
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Posts: 4731




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« Reply #12 on: March 01, 2013, 12:57:11 AM »

Isn't recycling supposed to be the 'in thing' these days? But glad to help.

That's two people now who have had HV transformers from me for building PSUs for T1154s....sorry guys, I'm running out of them!
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GW3OQK
Member

Posts: 155




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« Reply #13 on: March 01, 2013, 01:58:22 AM »

I bought my chokes on ebay and Variable Voltage Technology. Looks like you'll need a choke input filter + another section to make the volts about 1000v, and smooth. To switch the transformer from the T1154 standby/on switch I can donate a solid state relay and will send you my psu circuit if you like. For the 6v DC I used the parts from an old "12v" linear PSU which keeps the shack warm

My T1154 is working a treat on HF and even on 472 kHz. I mainly use it for CW. Looks like 5317 kc/s being used for R/T these days. Best of luck.
Andrew
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G1DNZ
Member

Posts: 11




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« Reply #14 on: March 01, 2013, 05:00:54 AM »

Thanks for the tips and offer ,the smoothing and wiring between tx + rx had been giving me some trouble up to yester day when i managed find the wiring layout .Will send you a pm thanks.
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