[TenTec] Adding Pilot Light to RX-320D

Mike Bryce prosolar at sssnet.com
Sat Feb 8 07:31:51 EST 2014


Sorry to say Phil,

All of the LEDs are gone.

Mike

Sent from my iPad

Knowledge is knowing a tomato is a fruit; Wisdom is not putting it in a fruit salad.
 

> On Feb 8, 2014, at 6:52 AM, Phil Sussman <psussman at pactor.com> wrote:
> 
> Mike,
> 
> I know it's been over a year, but I've been reviewing my emails.
> Do you happen to have any of those red LEDs left?
> 
> Thanks,
> 
> de Phil - N8PS
> 
> -----
> 
> Quoting Mike Bryce <prosolar at sssnet.com>:
> 
>> It's a easy as eating pancakes!
>> 
>> I'd suggest a T-1 LED. they're the smaller of the normal T 1 3/4.
>> 
>> 
>> Like a diode, an LED is polarity sensitive, it will only light when connected correctly.
>> 
>> decide where on the front panel you want the led to go, the smaller T-1 I think would look the best.
>> 
>> using a scrap piece of pcb material, metal, or whatever you have, and use that as a practice piece. You want a hole that the led will JUST barely push into to.
>> 
>> when you have the right size, mask off the front of the 320, mark the spot with a marker and then gently tap in a punch tip to make a small dimple, keeps the drill from walking.
>> 
>> when the hole is in, get a black magic marker and mark the inside of the hole and the edges, then push the led into the hole
>> 
>> place the led into the hole so the leads are side by side and not up and down.
>> 
>> 
>> 
>> as small, and I mean small, drop of super glue will hold the led in place
>> 
>> you'll notice that the led has one lead longer than the other. that longer lead is the POSITIVE side the led.
>> 
>> Now, you need a 1K resistor. clip the both leads back on the resistor to about 3/8 of an inch. Pretin both resistors leads and the longer lead of the LED.
>> 
>> 
>> Using a just a small amount of solder, solder one end of the resistor to the long lead of the LED.
>> 
>> Now, with some small gauge wire, say 24 or 26 solder a wire from the short lead to the nearest ground connection.
>> 
>> slip a piece of heat shrink tubing or insulating tubing (tape will work, too) around the resistor and the connections to the led. You don't want either lead to touch.
>> 
>> (If I were doing this, I'd cut both resistors leads to about 1/4 inch, and then solder the wires. But if you've never worked with one before, then leave the leads long.)
>> 
>> solder a wire from the free end of the resistor to the power switch.
>> 
>> Choose the lug on the power switch that has a wire going to the pcb. Solder the wire from the resistor to that lug.
>> 
>> apply power and flip the switch.
>> 
>> Enjoy your power LED
>> 
>> 
>> Mike, wb8vge
>> 
>> Ohhh, if you don't have a few red led T-1 in hand, let me know and I'll send you some----free!
>> 
>> 
>> 
>>> On Sep 29, 2012, at 4:23 AM, Richards wrote:
>>> 
>>> Greetings TenTec Mavens -
>>> 
>>> I would like to add a pilot light to the front panel of my TenTec RX-320D.   I have SOME home brewing skills... having built several kits, including a few TT receiver kits, and having designed some small project circuits on my own.  My experience suggests doing this is not as easy as merely soldering a LED into the circuit, and sticking it through a hole in the front panel.
>>> 
>>> But how hard IS it?   I cannot find any articles where this modification is described.  Any clues where I should start?  Any tips?
>>> 
>>> ----------------  K8JHR  ---------------------------
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>> 
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