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- Опубліковано 27 бер 2015
- Now that the repair seems to beholding, I thought I would check all the features of this radio.
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Thanks for watching. - Наука та технологія
Looks good and works good Tom!
Thank you and thanks for your support.
Good job Tom ! That is to say, if it works it's a good job.
Well I caught the bug from you, I've gone and purchased my second radio, a 750 ,
and if I did it right, you should be getting a credit. 73's, and keep em' coming.
Thanks for your support.
Great to see the DX-302 back up and running again... just a small point (that you've probably already noted) is your band selector knob has been put back on in an incorrect alignment, the LED's on the pre-selector are supposed to match the 6 band positions on the switch.
BTW These radios can also benefit from having the Mhz dial to be adjusted slightly for "peak signal tuning" :)
EDIT: Should you need to align the pre-selector scrolling band there is a small thumb wheel directly behind the pre-selector assembly which can be accessed with the cover removed.
I will check the knob position again.
Tom
hamrad88 Nice work! Glad to see vintage solid state equipment being reconditioned and functioning. I have a Panasonic RF-4900 from around the same time (1980-81)
(bought it brand new) It still works reasonably well, but the electrolytic caps are drying out so it has lost some of its former amazing sensitivity and it does drift a bit now.
This unit like yours is analog with a digital freq counter which also allowed it to have a super low noise floor that most PLL units can never achieve. I'd like to get it serviced but I can't find anyone who works on these anymore. Any advice?
Wow! Your wonderful RF engineer.
I have an old DX-302.
It is currently broken.
Khz frequency tuning dial does not work correctly.
The khz frequency tuning dial operates only from 000 to 064, and no frequencies can be tuned.
I have a DX-302 service manual, but I'm working on a breakdown of this.
Where is this a problem? Is it a mechanical problem with the dial shaft?
Or is it necessary to readjust the TC303 and L308 of the electronic circuit?
I look forward to your wonderful advice to solve this problem.
This radio is know to have plastic gears for the tuning that expand and over time break. Check that first.
There is a SSB contest this weekend. Lots of activity.
Thanks for the info.
Tom
Thanks Tom, its been a few years and I just grabbed one of these radios myself with the same problem. Would appreciate it if you could list the info for the replacement gear, glue does not hold well on all plastic gears.
Sorry do not have info.
Would the tuning still work if the digital readout lcd stopped working ?
I am guess yes.
so where's the fricking repair ???
Do you know the maker of that radio, Tom ?
You got me on that one.
Tom
jldanforth2k If I remember correctly, the radio was made by GRE in Japan for Radio Shack...General Research of Electronics Inc...Not a great HF radio, sold for around $400 new, which at that time to me was over priced...Good radio though and many can still be found...
@@hamrad88 As were most Tandy/RS radios, General Research Electronics of Chiba Japan Made the DX series for RS. GRE was killed by China, forced to close plant in China.
hamrad88 Nice work! Glad to see vintage solid state equipment being reconditioned and functioning. I have a Panasonic RF-4900 from around the same time (1980-81)
(bought it brand new) It still works reasonably well, but the electrolytic caps are drying out so it has lost some of its former amazing sensitivity and it does drift a bit now.
This unit like yours is analog with a digital freq counter which also allowed it to have a super low noise floor that most PLL units can never achieve. I'd like to get it serviced but I can't find anyone who works on these anymore. Any advice?
I have the same problem around here not even the HAMs around here work on radios.