I have been working FT8 with my ubitx – worked a station in Brazil this evening with no problems.? Here is my finished ubitx in its case.? I installed a fan because I spend a lot of time on digital modes.? The display has been replaced with one with a blue background.? The unlabeled switch on the back is for the fan - high, off, low.

Could you tell me how to wire in those 2 fuses. Pictures maybe.

Because this is what I have planned.

Randy

There are two power wires - brown to the PA (2 amp fuse) and red to the rest of the circuit (.5 amp fuse).? Just wire the fuses between those wires and the power switch.

Randy,

Attached is how I did mine. I put in two plain fuse holders. one is
wired from the power jack through a diode to one of the fuse holders.
The other is wired directly to the jack.

The red power wire is connected to the other side of the first fuse
holder. (The diode drops the input voltage from 13v out of my power
supply to about 12.3v.)

The brown lead (for the PA power) is connected to the other fuse.

tim ab0wr

On Tue, 20 Mar 2018 19:01:34 -0700
"Randy" <randy@...> wrote:

Could you tell me how to wire in those 2 fuses. Pictures maybe.

Because this is what I have planned.

Randy

I put a fan in mine before I even thought about FT-8. For digital modes it's a must-have for the digital modes unless you want to run at reduced power.

I just worked Hungary! Pretty cool!?

--
John - WA2FZW

Thanks guys!

I am a little compulsive and want to do things right. This helps!

Randy

What is the part # of that diode?

Randy

Yea that diode is pretty chunky. Please share

Joe

The diode is a 10amp rectifier diode I had in the junk box. Probably
overkill.

tim ab0wr

On Wed, 21 Mar 2018 02:23:29 -0400
"Joe Puma" <kd2nfc@...> wrote:

Yea that diode is pretty chunky. Please share

Joe

Found an 1N5404 in an old UPS and will measure the voltage drop.

Randy

开云体育

That is a silicon diode with a 0.6v-1.0v drop.?? A better choice would be a Schottky diode, such as this one from Amazon

20 pcs for $6.99 isn't bad!? With only a 0.2v drop, it's very unobtrusive and handles up to 15a of current.

Ron W7HD

Found an 1N5404 in an old UPS and will measure the voltage drop.

Randy

-- 
Ron W7HD - NAQCC#7587 OMISS#9898 KX3#6966 LinuxUser#415320
Editor OVARC newsletter

I *wanted* the voltage drop. I could only adjust my power supply down
to 13v. Using the diode in series dropped the voltage to about 12.4v.
Helps protect the main board from damage.

tim ab0wr

On Wed, 21 Mar 2018 12:54:43 -0700
"w7hd.rh" <w7hd.rh@...> wrote:

That is a silicon diode with a 0.6v-1.0v drop.?? A better choice
would be a Schottky diode, such as this one from Amazon


20 pcs for $6.99 isn't bad!? With only a 0.2v drop, it's very
unobtrusive and handles up to 15a of current.

Ron W7HD

On 03/21/2018 11:55 AM, Randy wrote:

Found an 1N5404 in an old UPS and will measure the voltage drop.

Randy

To KC5SB -- Bill, this is a great case! Where did you buy it? -- Rich WB2GXM

That is the one I bought.

Yes, that's the very same case that I used.? ?I had another device in it that I rarely used, so I re purposed the case for my ubitx.? Had to make new front and back panels from aluminum though.

Thanks Marco and Randy, will investigate - Rich

Be aware that the front and rear panels are not attached to the metal
of the rest of the case. The white part you see is some kind of plastic.

If you want a completely RF tight case you'll have to connect the
front and rear panels to the rest of the case somehow.

Other than this it appears to be a nice case.

tim ab0wr

On Thu, 22 Mar 2018 16:56:38 -0400
"Richard Spohn" <wb2gxm@...> wrote:

Thanks Marco and Randy, will investigate - Rich

On 3/21/18, M Garza <mgarza896@...> wrote:

I think it is this case, just painted black.



Marco - KG5PRT

On Wed, Mar 21, 2018 at 4:09 PM, Richard Spohn <wb2gxm@...>
wrote:

To KC5SB -- Bill, this is a great case! Where did you buy it? --
Rich WB2GXM

I believe the antenna panel mount will take care of one end.

Randy

On Thu, 22 Mar 2018 18:33:51 -0700
"Randy" <randy@...> wrote:

I believe the antenna panel mount will take care of one end.

Randy

Yep. Didn't think of that. The mic and key jacks will ground the front
panel if you mount them on the front. Make sure you scrape paint or
whatever is needed so they make good connection on the ground part.

tim ab0wr