always look forward to see you on Sat. mornings,,thanks Peter,your the best

Thanks for sharing Peter. Those test points are really hard to get at. You had to work for that one! 73

Beauty transceiver in hands of a great technician. Congratulations Peter, and thanks for sharing you knowledges.

Ive learnd very mutch from your videos, thx :) 73

You make it look so easy! Great job!

Hi! So I have one of these that badly needed the crystal oscillator realigned. It turns out that there's a 433.03MHz test point you can use without having to pull the board out - I traced the circuit enough and found the resistor/wire coming out of the shielded section with L7 also is 433.03MHz. It's not the right point for the level check, but it's definitely enough to determine if the oscillator is on/off frequency. I compared the signal level at the test point seen before and after calibration and saw it at the same level so I figure I'm no worse than before. And now the output is within a few Hz of 433.03MHz and now the radio is basically dead on frequency. Thanks for this video! It helped me get over my fear of opening my IC-1271A up and now it's properly on the air!

excellent job, I'm sure the owner was a happy camper

very good video takes good job from Gary in the UK.

Thanks for sharing and see you next time Peter. *Cheers* *_73_*

Peter, thank you for sharing. That thing was a real son of a gun, holey socks man! I wonder if they could have put more shields in that radio? I call that electronic surgery. You absolutely amaze me most of the time Peter. Once again thank you very much. Joel

I love all your videos please make more I like to learn from you

just a quick shout out to you for these remarkable videos. I've been following your channel for awhile now and am always amazed at your knowledge and expertise.

Nice job again 🙂👍

Nice job Peter, but what interests me most is WHY those circuits were so far off tune. What is the physical process that makes such large differences appear over time? Is it the result of temperature cycling and bad design?

Wow! I would have given up! 73!

I still remember my activities at 23cm. If you did not have the right measuring equipment here you were stuck. You are really well stocked. At that time I always worked with transverters and just had to hit the LO frequency exactly. On the input side I had to adjust an exact 28MHz signal. That was no problem with my measuring equipment. The transverter was under the roof 2m below my antenna. I hardly had any coax losses. I really like your Racal Dana frequency counter. I should get that one too. Maybe I'm lucky and find one on ebay or a flea market. 73 Bernd

Good radio. I have the IC-271 (2M).

You must have a headache after that one, what a job to do...must have a lot of patience Peter from Fred in Uk g4vvq.

Hi Nice work. I too have one of these rigs and mine has a couple of issues too. I was wondering if you happen to have a soft copy of the Service manual as the copy I have does not have the alignment section on it Thank you for any help

Another enjoyable video Peter! Thanks!

Nice video, Peter. I hate this kind of radios, because you have to invest so much time just to to a 2 minute jobby at some small areas. I often find my self thinking " Hm, may i cut the shielding like a thuna can, and solder it back in place after...;-)" What i did was to drill holes beside the nozzle of a vacuum to get to the aligment points, and solders it with new plates. That was a special gov-radio , and i was i a critical hurry... So anyway, i guess the OM was very happy with your work. So am I! 73 de Olaf

Very nice job Peter, you are a brave man!!

I love how you say "Z" like us Canadians (ie: zed) :)

Hey Peter, I have a question; why did you used two different frequency counters towards the end for the alignment procedure? As always, I really enjoyed the video. Thanks!

Brilliant but im not technically minded but very intrested to watch you work the problem out.

Fantastic Job Peter!! Congratulations from Brazil . 73 PY5MM

Seems this radio was designed not to be aligned. Do you think each module was aligned on a jig then the radio was assembled? Thanks for the video.

Wow!!! What an education you just gave me! I had always thought that the frequency display on a transceiver showed the "exact" frequency because it was a form of Frequency Counter. Now I know better. Since it isn't measuring the exact frequency, what is it displaying? Is it just counting turns of the dial or something? I guess unless you have a way to put a frequency counter in line with the SO239 going to the antenna, you can't actually know what frequency you are transmitting on. Does the lack of accuracy of the display also apply to the receive frequency?

After been off air for abt 20 years I then just now found my IC751 having a 100 of bad issues, and hell, I really do wish I'd had the skill to fix it, but no - No go. So sad

" No user serviceable parts inside." Icom's are always a pain to work on. I wonder also if this is one of those radios that has the operating system on VOLATILE ram.

Dear Trx- Bench, I bought this Transceiver for 200€, but the Transmitter has no out- put power and I have no idea, what the reason is, driver or endstage😂 I have only a spectrum analyzer dsa 850 from Rigol and changed the endstage, but no good result.😢

Nice job peter, Good counters those old racal dana's, I have the 1991 model

That radio looks new inside. 73 From M0IVC - CT9ABQ

I like the speed the videos are coming, watching now an nice welcome this morning with an cup coffee. Thanks Peter. Ps. What kind of cable you use, they are nice flexible?!

Thanks Peter!

what's about SSB, I had an issue, FM was perfect but SSB gave a harsh modulation.

Hi Peter I saw you are doing very good job in fixing Icoms, I need also a repair job for mine, can I ask you for your help?Thank you. 73 Gigi YO7NE

Sorry TRX Bench, thought I may catch you here on another matter, do you think you could look into the 49:1 transformer, please, I am confident of any suggestions you could make or show, if you had the time. Other wise ignore, understood, thank you. Dennis, VK4JDJ

oh dear what a nightmare Peter, great video though !

It was easier to get into an enigma machine lol 73

Peter: Is this radio a little deaf?

Considering the frequency, 1.xx GHz, was it worth all that for 5KHz? They user can just the dial a little to optimize reception or be on frequency? P.S. - You have a great voice and accent. I used to work for Krautkramer Branson, back in the day, and I miss the accent in our meetings and the three training visits I had to Cologne, Germany.

the SMDU is only 1050MHz max not 1296MHz so the power measurement could be not correct.

All mode??? Wo ist AM??? :-) Well SSB is really a vastly over modulated carrier without one sideband haha. I wonder how the factory had the allignments set up as they went down the assembly line? Danke sehr Peter.

You must of invested a lot of money in your test equipment. Is it worthwhile financially to keep it up or repair your equipment you get. Is it even worthwhile to put it on you tube. Sorry I dont want to be nosy. Even so I am not into TRANSMITTERS and receivers. Good luck. And best wishes. GOD BLESS. You must have a lot of passion in this field like I do in my electronics field.

I cannot understand why anyone wants to communicate on such a high frequency. The radio waves go what, 500 feet? Just not my cup of tea. Way too much shielding for those high frequencies. I don't even make contacts on 70 centimeters. 2 meters is about as high as I go. There's just too much power lost in the higher frequencies. I even use 213 coax on my 2 meter radio. Cheers & 73 from W Rusty Lane K9POW in eastern Tennessee

U like Icom service nightmare ? Good think needs time ^^

WOW What a horrid design. It must cost more to align this set than to recondition any other set. ;)