30fb001
Freebander
Registered: 07-2009
Posts: 74
Karma: 0 (+0/-0)
|
|
Reply | Quote
|
|
Re: Ugliest CCT Board...
Ugly? No. You have a LOT of patience and a good eyes, not like mine...
73 de Juan
Ok, this is Ugly, not yours LOL
Last edited by 30fb001, 23/Apr/2011, 12:15 pm
|
|
23/Apr/2011, 11:11 am
|
Link to this post
Send Email to 30fb001
Send PM to 30fb001
|
Hot Fusion
Management
Registered: 03-2008
Location: South West England
Posts: 1389
Karma: 7 (+7/-0)
|
|
Reply | Quote
|
|
Re: Ugliest CCT Board...
OK, beat this one:
This was a little circuit designed using a 555 timer intended to drive a radio control servo unit, to make it take up a position dependant on the setting of a potentiometer. It worked well once I'd messed about with some component values.
I now use it to tune out the inductive reactance of an overly-long 80m antenna, by using the servo to operate a variable capacitor at the antenna base.
The circuitry has been tidied up and a circuit board made, and the device now sits in a box at the radio position to enable me to tune to almost 1:1 SWR anywhere around the 80m band.
Last edited by Hot Fusion, 25/Apr/2011, 1:52 pm
---
Andy - FB107
|
|
25/Apr/2011, 1:43 pm
|
Link to this post
Send Email to Hot Fusion
Send PM to Hot Fusion
|
YT2095
Freebander
Registered: 12-2010
Location: the Black Country
Posts: 188
Karma: 1 (+1/-0)
|
|
Reply | Quote
|
|
Re: Ugliest CCT Board...
I totally love your regulator "cluster", I`v done similar myself in the past, I gather it`s a 7805 or similar?
---
I`m also on Twitter as "YT2095" ;)
|
|
25/Apr/2011, 8:07 pm
|
Link to this post
Send Email to YT2095
Send PM to YT2095
Blog
|
Hot Fusion
Management
Registered: 03-2008
Location: South West England
Posts: 1389
Karma: 7 (+7/-0)
|
|
Reply | Quote
|
|
Re: Ugliest CCT Board...
Yep, 7805, freely available from old tellies and suchlike. In fact, I paid for nothing there, all from the junkbox except the servo, which I scrounged.
Note the 555 mounted in a 16 DIL socket. You gotta improvise!
Actually... (looks about a bit...)
Here's the finished 'product', neatly packaged on a circuit board and fitted into an old computer PSU box, using most of the same components:
As you can see, I develop a project to the point where it works, but never 'prettify' it.
As if to prove a point, here's the antenna tuner itself, securely housed in a mil-spec plastic biscuit tin:
Last edited by Hot Fusion, 25/Apr/2011, 8:28 pm
---
Andy - FB107
|
|
25/Apr/2011, 8:24 pm
|
Link to this post
Send Email to Hot Fusion
Send PM to Hot Fusion
|
