By continuing to use this site, you agree to our use of cookies. Find out more
Forum sponsored by:
Forum sponsored by CML

Microtrol 5 ch. transmitter

Fault Finding no output

All Topics | Latest Posts

Search for:  in Thread Title in  
david archer 412/05/2017 15:38:37
1 forum posts

Hi I found a post from Paul Newell 2007 I think. I built the Microtrol system when it first came out with parts from chap in Sunderland.

It did work with a little help from an electronics engineer/scope etc.

It was used only once resulting in a crass which quite put me off!

I still have the set but it is now not working - no RF output from the TX.

Anybody with any suggestions on the fault?


Alan Gorham_12/05/2017 17:10:19
1285 forum posts
145 photos

Could it be that the Tx crystal is not fitted or is faulty?

You say that the only time you used the set it caused a crash - could this crash have been caused by a fault that caused the Tx to stop Txing?

GEOFFREY PIKE 116/11/2017 22:14:18
1 forum posts

You dont give use much to go on when u say there is no RF output. The old simple tests of listeneing on a

domestic FM radio may indicate if the xtal oscillator is in fact oscillating.

For example 27 x 3 = 81 MHz or 27 x 4 =108 MHz so there is a chance you could confirm the crystal is working

I built my Microtrol back in the day from probably the same source, still have it.



All Topics | Latest Posts

Please login to post a reply.

Latest Forum Posts
Support Our Partners
electricwingman 2017
Sussex Model Centre
Advertise With Us
Latest "For Sale" Ads
Has home isolation prompted you to start trad' building?
Q: The effects of Coronavirus

 Yes - for the first time
 Yes - but Ive bashed balsa before
 No - Ive existing projects on the bench
 No - Im strictly an ARTF person

Latest Reviews
Digital Back Issues

RCM&E Digital Back Issues

Contact us

Contact us

Magazine Locator

Want the latest issue of RCM&E? Use our magazine locator link to find your nearest stockist!

Find RCM&E!