I was a bit shocked when the “good” side of the sensor became the “bad” side, but happy when I noticed the missing solder. Nice to be able to change bands!
It did look pretty messy! The IR sensors are not even through-hole… all three leads go through a slot and get soldered like point to point wiring. It doesn’t seem to be as precision and delicate as some posts mention.
Congratulations Bruce, your dedication has paid off. I admit, that my first thought was that it was destined to be a ‘parts’ radio. I don’t think it was economically viable, but that was never the point. I was at a radio club junk sale a few weeks ago, where I was offered a Kenwood TR-2300 for £6. No idea if it works yet, as I have a couple of other projects on the go. 73 Nick G0OQK
Thanks Nick! You really nailed the intent of reviving “Rusty”! It’s the challenge and the fun of seeing if I can get it going again! I already have a perfectly fine IC-735, but this one is way more fun. The $60 LCD was the part that made it feel a little silly, but it certainly came out looking good. I’ll get Rusty a new battery back-up and get it on the air! 73, Bruce
Thanks for the congratulations 🎊 - next is to decide if I want to take the next step and disassemble the sensor to clean and lubricate it for smoother tuning. 🤞
The filter is a 500 Hz unit, so not as narrow as the K2, but definitely easier to listen to with the S4+ local QRM. I’ll see if I can work some POTA stations on the weekend. Pretty fun radio.
Nice! My '735 main tuning is stiff..I have loosened the "brake" that is underneath, but it not as loose as I would like. Do you think any lubrication would work? If it was an older rig with a variable cap, sure..no problem. I am concerned I might damage the encoder... VE3IIM/VE6PG
I haven’t tried to lubricant mine as I trying to avoid a new issue to resolve, but this old article from the internet archive seems to give a good step by step process: archive.org/details/manualzilla-id-6039508
Im going to probably have to do this with the broken encoder I traded for to help fix a friends 735. But mine also has the problem with it transmitting 180w regardless of power settings... Anyone have an idea why?
Sounds interesting. You can start by working on the sensor in receive mode. You can get to the board on the sensor by removing the tuning knob. There are 4 long screws that will let you put it out enough to check the signals
You definitely have more patience than I do. Nice to see the ability to tune the radio.
I was a bit shocked when the “good” side of the sensor became the “bad” side, but happy when I noticed the missing solder. Nice to be able to change bands!
Good job Bruce. That board really looked like one big blob of solder.
It did look pretty messy! The IR sensors are not even through-hole… all three leads go through a slot and get soldered like point to point wiring. It doesn’t seem to be as precision and delicate as some posts mention.
Congratulations Bruce, your dedication has paid off. I admit, that my first thought was that it was destined to be a ‘parts’ radio. I don’t think it was economically viable, but that was never the point. I was at a radio club junk sale a few weeks ago, where I was offered a Kenwood TR-2300 for £6. No idea if it works yet, as I have a couple of other projects on the go. 73 Nick G0OQK
Thanks Nick! You really nailed the intent of reviving “Rusty”! It’s the challenge and the fun of seeing if I can get it going again! I already have a perfectly fine IC-735, but this one is way more fun.
The $60 LCD was the part that made it feel a little silly, but it certainly came out looking good. I’ll get Rusty a new battery back-up and get it on the air! 73, Bruce
It was WA7PGE. Congrats on the encoder fix!
Thanks for the congratulations 🎊 - next is to decide if I want to take the next step and disassemble the sensor to clean and lubricate it for smoother tuning. 🤞
Nice to see you got it to tune again. When you first put the cw filter in i didnt hear much improvement. Now the annoying hf hiss is diminished.
The filter is a 500 Hz unit, so not as narrow as the K2, but definitely easier to listen to with the S4+ local QRM. I’ll see if I can work some POTA stations on the weekend. Pretty fun radio.
Nice! My '735 main tuning is stiff..I have loosened the "brake" that is underneath, but it not as loose as I would like. Do you think any lubrication would work? If it was an older rig with a variable cap, sure..no problem. I am concerned I might damage the encoder...
VE3IIM/VE6PG
I haven’t tried to lubricant mine as I trying to avoid a new issue to resolve, but this old article from the internet archive seems to give a good step by step process:
archive.org/details/manualzilla-id-6039508
Im going to probably have to do this with the broken encoder I traded for to help fix a friends 735. But mine also has the problem with it transmitting 180w regardless of power settings... Anyone have an idea why?
Sounds interesting. You can start by working on the sensor in receive mode. You can get to the board on the sensor by removing the tuning knob. There are 4 long screws that will let you put it out enough to check the signals