Hi Group You may recall my attempted conversion of a FM92 U band 12.5 kHz step Local control unit for 70cm.. Been looking at it in dribs-an-drabs (10 min here...
Chris Can you tell me more about the 'silver conductive epoxy'? I have found a radio where the front end module boards both fell off the cast shield. As you...
Hi Barry Conductive epoxies as with most epoxies are a 2 part mix, however this type of "loaded mix" contains a silver powder (obviously in a paste or slurry...
Thanks Chris, You have confirmed there is no cheap conductive product. Too expensive for occasional use, sadly. I once had a 'pen' of silver conductive paint,...
Hey all, Im close to buying a FM92 Philips, 5W with a 25W EPROM supplied. Im thinking this unit will be perfect for what I want, and I also own a PRM8040. What...
... Just the Eprom does not make it 25 watts if the radio has been adjusted to 5 watts internally then it will still only be 5 watts ... must be a big dash if...
Hey guys, Any idea on how to wake up the recieve on my FM 900, it TX's fine, just deaf as a post, will not even pick up close signals at all, I tried the drop...
Re-melt the solder joints in the vco. I think there was some discussion about this procedure on the list not too long ago. Just do a search of the post's. If...
Hello Everyone, First time poster, long time reader, thanks to everyone who has posted to this group I have been able to acquire, reprogram and align a W1 FM92...
Sounds like the VCO is operating near it's limit Have you set it up for the freqs you want or have you just stuck a new eprom in Steve ... From: "robbydot"...
Hello Steve, I've set the VCO up as to the Service manual ( 13 Volts TX & RX ) and some info off one of the websites ( 10 Volts TX & RX ) . It's adjustable...
Hi sounds like you have done it right, 100Hz don't worry about it. When it does not tx I take it the vco goes out of lock so it may well be near the limit,...
Hi Rob, Could be the vco borderline to its limit. You could try going up or down in frequency maybe 1 or 2 Mhz to see if it makes it stable, then you would...
G'day Matt Thanks mate I will try to get stuck into it over the wekend and post the results. Cheers Anthony ... From: Matt Ensby To: FM900@yahoogroups.com ...
Max, If just the receiver is just deaf, it won't be the VCO. These radios grow whiskers in the receiver module. If the drop test didn't fix it, the receiver...
Hi Rob, Other reasons the warning light comes on is if the SWR is too high at the antenna socket, or the power output level is too low for the programmed ...
Thanks Everyone for replying 8-) I should get a chance tonight to keep going on it, I'll let everyone know how I go... Steve, it was originally on 486 MHz ...
G'day Craig Thanks mate Will do, I love these old things, they are built like tanks !! Cheers Anthony ... From: Craig To: FM900@yahoogroups.com Sent:...
Hi Rob I have had a similar problem in the past, the radio would not TX accross the whole band, I tracked it down to the old VCO problem and repaired it using...
... So you're still with us Paul? Was beginning to wonder where you'd got to! On the VCO issue .... may have to try that on the node FM900 here. 5 years, and...
Hello again Everyone, Well, it wasn't straight forward but we got there.... The problem turned out to be IC 201, an OM815 chip... it appears to be a voltage ...
Hi Rob, That's great to hear! These radios are getting to an age now where it's probably quicker to apply those mods as soon as the radio is opened up, rather...
Hi Mark, Yes Mate your right, I'll be picking up a swag of 10uf 50V electros today for spares... 8-) I have another question to the group, Is it possible to...
Hi Rob You should be able to get your T band FM900 on 70cm's just by programming it for T band and then tuning.. I've programmed / tuned W1, U & T band units...
Hey John Yeah I am still kickin, been busy working, you know that thing you retired folk do way too much of. Actually I had a bit of a mid life Crisis, I went...
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