Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Realistic DX-302 - MHz will not change
#1

Now having a new longwire antenna for the first time at this house, I decided this evening to pull my Realistic DX-302 off the shelf and try out both radio and longwire.

I was amazed to find that on the 1.000-1.999 MHz band, that I was picking up an AM station every 10 kc! And this was about 6:30 pm EDT, with the sun still out.

Unfortunately, when I went to change the MHz switch (the collar surrounding the tuning knob), the collar only turned and "clicked" - the MHz would not change.

I have seen online that a nylon gear is prone to breakage, but have found nothing as far as how to fix it.

Does anyone here have any thoughts on this?

Thanks.

--
Ron Ramirez
Ferdinand IN
#2

Ide cruise youtube... I know they have a topic on how to modify the audio circuit for better sound. Perhaps theres a video to conquer a collar fix there..

I have one of these units, theyre pretty cool.. Icon_biggrin

Steve
#3

This is a fairly common problem with this model, and results from their using cheap nylon gears instead of brass. I remember reading about this problem before. When you open up the front you will see the gears that are driven from the larger knob. The one that usually breaks can be replaced with a gear that is available from hobby shops that deal in RC race cars. Here is a link to a Hamnet page that covers this. https://www.eham.net/reviews/detail/1936
#4

Thanks guys. Unfortunately, unless I missed it, the eham.net link does not give any details about a possible replacement gear other than "found at R/C hobby shops". That's like me telling someone looking for O-rings for their Philco model 16 or 44 to "look in a hardware store".

I did join a Yahoo group which specializes in the DX-302 and other Realistic SW receivers, so I hope to find some answers there.

I do appreciate the input from both of you. Icon_thumbup

--
Ron Ramirez
Ferdinand IN
#5

I went to that link myself, Very informative..

The radio would drift a bit and i though something was wrong... Turns out im SUPPOSED to let it warm for 30 min.. WHO KNEW??.... Me now Icon_biggrin

Steve
#6

Ron, I think the easiest, and maybe fastest way to get this thing fixed, would be to remove the problem gear, and take it with you to some RC car hobby shops, and see if they can find something that matches diameter and teeth. That seems to be what others have done. Remember, this is not rocket science, nor is it museum restoration. From what I have read, you may have to do some modification of the shaft part of the gear to make it fit right, but, at least you will have a radio that works.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Jackson 715 not working
Mrfixr55, its working now. I cleaned the switches and sockets with spray cleaner. Thanks for helping on this one.daveone23 — 06:26 PM
Jackson 715 not working
Now that you posted the schematic, I don't know why that Sprague electrolytic cap is across the meter, as it is not indi...MrFixr55 — 05:51 PM
HiFi (Chifi) tube amp build - but my own design.
What may be lacking in the PP Tube amps may be the 2nd harmonics, which some, especially RCA back in the day called &quo...MrFixr55 — 05:32 PM
Jackson 715 not working
Usually in an emission tester, the tube under test is measured as if it were a diode. So, some testers connect all the g...RodB — 04:17 PM
Restoring Philco 37-604C
Yep. F5 is green, D5 is Red. Red is Bad. Green is Clean.morzh — 01:30 PM
Jackson 715 not working
I did start to do that but I stalled out because I could not figure out how the grid and plate get voltage. In this diag...daveone23 — 11:52 AM
Restoring Philco 37-604C
(Insert Homer Simpson "DOPF" Here.) When all fails, look at the can. Took the Ron Ramirez advice, red Caig D...MrFixr55 — 09:23 AM
Philco 91 Speaker Replacement
From your text I am not sure if you intend to use the existing speaker with a resistor instead of the field coil. It wo...morzh — 08:44 AM
Philco 91 Speaker Replacement
My field coil is bad. I am still hoping to find an original, but if I can't I will go with a fitting Philco speaker, 125...dconant — 08:34 AM
Philco 91 Speaker Replacement
As Rod said, it is OK to use a fitting speaker, and then look for an original one. If you buy a Hammond 125 output tr...morzh — 08:15 AM

[-]
Who's Online
There are currently no members online.

>