Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

Thread Closed
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
philcorepairbench.com - shadow-meter
Anyone know of a way to recover these files from the repair bench? Thanks. fenbach — 11:16 PM
Philco model 38 code 121 not receiving signal.
That's true. Of course If I were to get a vtvm I'd probably have to sink money in to it to get it working right. Probabl...Stormlord5500 — 08:44 PM
Philco model 38 code 121 not receiving signal.
A DMM is good enough. One rarely has to measure indictance, but if you do, short of getting a serious LCR meter (I hav...morzh — 07:35 PM
Testing a speaker and output transformer Trutone A2-G
You guy's are right on. I found a broken wire on the speaker plug that I replaced and all is well now. Have better volu...murf — 03:43 PM
Philco model 38 code 121 not receiving signal.
I need to get a vtvm. I think that little component tester is just more accurate. Plus it shows the inductance which is ...Stormlord5500 — 03:07 PM
Philco model 38 code 121 not receiving signal.
I use a pair of Mastercraft brand DMMs from Canadian Tire, from what I read most of those DMMs use the same main chip re...Arran — 02:36 PM
Philco model 38 code 121 not receiving signal.
Thank you sir. Yes I feel good and also relieved because this one's been weighing on me a bit.Stormlord5500 — 11:18 AM
Philco model 38 code 121 not receiving signal.
It feels good don't it? Good luck on the rest.Paul Philco322 — 11:06 AM
Philco model 38 code 121 not receiving signal.
I've reinstalled the coil. Now IT'S ALIVE!!!!!! I fired up my TinySA on signal generator mode and set it to 1400Kc and ...Stormlord5500 — 11:01 AM
Philco model 38 code 121 not receiving signal.
Yes, Walmart, right up there with Fluke.RodB — 11:00 AM

[-]
Who's Online
There are currently 2352 online users. [Complete List]
» 3 Member(s) | 2349 Guest(s)
AvatarAvatarAvatar

>