Search found 16 matches

by dicky96
Wed Nov 15, 2017 3:39 pm
Forum: FM Radio
Topic: FM range question - coastal mountainous terrain
Replies: 22
Views: 739

Re: FM range question - coastal mountainous terrain

Is there some reason you can't move the transmitting facilities to the Nieves Peak area somewhere along GC 134 (such as the San Bernardo refuge) and increase power to 5kW? I concur with Deep Thought, your major problem here is obstructions from volcanic landforms with the resulting wave reflections...
by dicky96
Wed Nov 15, 2017 3:25 pm
Forum: FM Radio
Topic: FM range question - coastal mountainous terrain
Replies: 22
Views: 739

Re: FM range question - coastal mountainous terrain

That's a very fair comment Mr Fry and I want to say that I very much appreciate your input to this point - I'm not sure I am totally clear in my mind of the best way to proceed but I am definitely feeling more educated regards the current situation and the options available. So to yourself and other...
by dicky96
Wed Nov 15, 2017 10:04 am
Forum: FM Radio
Topic: FM range question - coastal mountainous terrain
Replies: 22
Views: 739

Re: FM range question - coastal mountainous terrain

Thanks everyone for the continued input. Special thanks to R Fry for your time generating those charts Interesting, I thought from the discussion here that increasing the transmitter to 4kW 4bay wasnt' going to make much difference but it seems that the second chart has light red in most of Maspaolo...
by dicky96
Tue Nov 14, 2017 4:35 am
Forum: FM Radio
Topic: FM range question - coastal mountainous terrain
Replies: 22
Views: 739

Re: FM range question - coastal mountainous terrain

Thanks for the reply I was asking as the guy who originally owned the station (my partner now) is already convinced that increasing the power, even to 2kW, will fix the PDI problem. I honestly didn't know enough to comment on that, other than every 3dB doubles the signal level. So I googled around a...
by dicky96
Mon Nov 13, 2017 3:39 pm
Forum: FM Radio
Topic: FM range question - coastal mountainous terrain
Replies: 22
Views: 739

Re: FM range question - coastal mountainous terrain

Oops sorry I see that the chart is ALREADY for antenna 15m above grond level :oops:

Rich
by dicky96
Mon Nov 13, 2017 2:33 pm
Forum: FM Radio
Topic: FM range question - coastal mountainous terrain
Replies: 22
Views: 739

Re: FM range question - coastal mountainous terrain

Hola from cold England! So yes I am back in the UK for one week, I've been here for 4 days now and it's really is too cold here for me! Hey guys thanks for all the hard work on this problem In reply to a few points The projected height of the obstacles in relation to the transmitter is probably slig...
by dicky96
Thu Nov 09, 2017 11:06 am
Forum: FM Radio
Topic: FM range question - coastal mountainous terrain
Replies: 22
Views: 739

Re: FM range question - coastal mountainous terrain

That is very kind of you to offer your time! :D I think these are the co-ordinates 27.7901582,-15.7164727 Took these from google maps and I know our island is 27.5N 15.5W so that sounds right The antenna mast is directly on top of the Barbacoa Restaurant and Show Bar https://www.google.es/maps/place...
by dicky96
Thu Nov 09, 2017 7:45 am
Forum: FM Radio
Topic: FM range question - coastal mountainous terrain
Replies: 22
Views: 739

Re: FM range question - coastal mountainous terrain

Thanks for the reply. The station used to have a 1kW transmitter on top of one of the hotels in 'Englishmans Beach' on 102.5 and the other transmitter here is on 99.4. The 102.5 transmitter was fed via internet. So I guess the emmisions were OK. The PTX20 I am looking at actually came from that rig ...
by dicky96
Thu Nov 09, 2017 6:04 am
Forum: FM Radio
Topic: OMB PTX-20 test and repair help required
Replies: 15
Views: 434

Re: OMB PTX-20 test and repair help required

TPT wrote:
Wed Nov 08, 2017 6:32 pm
Ah--Gran Canaria. I see the problem! A losing battle with geography. (Think Oahu--the islands are about the same size.)
600 square mile island with a 6,000 foot mountain in the middle.
Yes it certainly keeps you fit living here! But it is breathtaking beautiful :)
by dicky96
Thu Nov 09, 2017 5:40 am
Forum: FM Radio
Topic: FM range question - coastal mountainous terrain
Replies: 22
Views: 739

FM range question - coastal mountainous terrain

OK guys I put this on a new thread to keep my other one on topic - hope this is OK So I am now involved with this radio station in Gran Canaria. There are only 5 or 6 stations on the island - we are the only one catering for English language and Scandinavian tourists I've attached a topographical ma...
by dicky96
Thu Nov 09, 2017 4:53 am
Forum: FM Radio
Topic: OMB PTX-20 test and repair help required
Replies: 15
Views: 434

Re: OMB PTX-20 test and repair help required

My Radio Ham friend in the UK has a suitable load for me to borrow, I'm seeing him while I am in the UK next week so will let you know how I get on with the PTX 20

Regards FM coverage and range question I will start another thread to keep this one on topic
by dicky96
Wed Nov 08, 2017 5:02 pm
Forum: FM Radio
Topic: OMB PTX-20 test and repair help required
Replies: 15
Views: 434

Re: OMB PTX-20 test and repair help required

OK Thanks to everyone who helped out even if some questions were very basic to you :D . On Friday I will going back to the UK for a week so will get a dummy load. Will be back a week later and let you all know how I get on. I have some interesting (I hope) questions about why our 1kW transmitter doe...
by dicky96
Wed Nov 08, 2017 10:43 am
Forum: FM Radio
Topic: OMB PTX-20 test and repair help required
Replies: 15
Views: 434

Re: OMB PTX-20 test and repair help required

OK will do

What type of RF Output connector is this?

Thanks
Rich
by dicky96
Tue Nov 07, 2017 2:37 pm
Forum: FM Radio
Topic: OMB PTX-20 test and repair help required
Replies: 15
Views: 434

Re: OMB PTX-20 test and repair help required

Soooo... if I understand the replies right, from the sounds of things this is possibly functioning - once the PLL locks the output stage powers up, it draws a bit of power (just guessing from the brightness of my current limiting light bulbs maybe 30-50W) then shuts down due to no RF load, and the c...
by dicky96
Tue Nov 07, 2017 8:24 am
Forum: FM Radio
Topic: OMB PTX-20 test and repair help required
Replies: 15
Views: 434

Re: OMB PTX-20 test and repair help required

Hi and thanks for the reply Yes it does look corroded in there which is really wierd as the station is in Puerto Rico the town in Gran Canaria (not Puerto Rico the carribean island) Our climate is arid sub tropical so our annual rainfall is 80mm (3 inches) and temperature rarely goes above 30C (dail...