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Vintage Amateur and Military Radio Amateur/military receivers and transmitters, morse, and any other related vintage comms equipment. |
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2nd Mar 2021, 1:10 pm | #1 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Yaesu FT290RM
Received my new radio today. How interesting. It had been described as having a mutek front end fitted which it was clear from the pictures it hadnt. Instead however its had a number of modififcations performed by A.R.E, which are listed on the leaflet that came with it. Havent had chance to try it out yet, but its extremely tidy for its age. I had put the cart before the horse and picked up a Mutek preamp, whilst looking for a radio. Ill list it for sale here as its surplus to requirements now.
Does anyone know the thickness of the battery pack foam, and where to source please ? |
2nd Mar 2021, 1:11 pm | #2 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Re: Yaesu FT290RM
Mutek preamp
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2nd Mar 2021, 10:30 pm | #3 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Re: Yaesu FT290RM
Found various suppliers of foam on ebay. Had it on the comms test set today, its extremely sensitive and giving full output. Not checked the audio quality. Giving it a good clean and polish.
With its history, and condition its definitely a keeper |
6th Mar 2021, 9:57 pm | #4 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Re: Yaesu FT290RM
3mm neoprene foam sheet fitted. Ordered some high capacity NI-MH AA cells and AA-C adaptors. On air testing shows it to be quite lively
https://youtu.be/uSov3DGhBjY I want to replace the ty-raps with some clear lacing cord though |
7th Mar 2021, 1:02 am | #5 |
Heptode
Join Date: May 2015
Location: Chatham, Kent, UK.
Posts: 947
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Re: Yaesu FT290RM
Hi i am glad to see i am not the only one to use a beacon to do a quick test of a radios performance in my case GB3VHF on 144.430 in Trosley, great radio Mick Just noticed you are running this without its aerial this forms part of the final tuning and can result in a blown final transistor
Last edited by mickm3for; 7th Mar 2021 at 1:05 am. Reason: mised part out |
7th Mar 2021, 1:34 pm | #6 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Re: Yaesu FT290RM
Thanks Mick yeah noted. Yes NGI is readily receiveable here. Can also pick up GB3VHF from up here in Lancashire when theres a slight lift on.
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11th Mar 2021, 9:07 pm | #7 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Re: Yaesu FT290RM
NiMh AA cells and adaptors fitted. Its cost less than a third of the price of C cells.
Its still on its original memory back up battery which fortunately hasnt leaked. Ordered a surface mounted coin cell holder to make future replacement easier. Ive also cleaned the case, its come up very nicely |
11th Mar 2021, 10:21 pm | #8 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Re: Yaesu FT290RM
Battery removed and Id decided to recap around the 8.6v regulator while it was out. It was drifting slightly on warm up and when listening to a beacon, if a bit of impulse noise was received, it drifted a few hz for a second or so and settled. Service notes indicated checking the 8.6v rail. One of the removed caps looks to be dodgy
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12th Mar 2021, 9:58 pm | #9 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Re: Yaesu FT290RM
Pvc piping has arrived. It looks and feels like it will work, and has a good bit of stretch to it
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14th Mar 2021, 3:57 pm | #10 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
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Re: Yaesu FT290RM
Success
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14th Mar 2021, 3:59 pm | #11 |
Heptode
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 632
|
Re: Yaesu FT290RM
Also spotted another couple of dodgy decouplers
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20th Mar 2021, 9:06 pm | #12 |
Pentode
Join Date: Nov 2018
Location: Freckleton, Lancashire, UK.
Posts: 232
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Re: Yaesu FT290RM
Looks like a tidy old radio, well done !
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Building and tinkering for over 50 years, from 807's to digital amateur TV. |