Search found 29 matches

by waveguide
Fri Dec 01, 2017 2:35 pm
Forum: AM Radio
Topic: Low Power AM ATU question....
Replies: 4
Views: 353

Low Power AM ATU question....

Hi folks, I'm going on vacation to the UK in January and I'm doing some work for a friend who is running a low power medium wave/ AM station at a hospital. He's tried to fine match the antenna (base loaded 7m vertical) with a MJF Versatuner Deluxe II 949E but the ATU is making no improvement what so...
by waveguide
Tue Oct 17, 2017 8:46 am
Forum: FM Radio
Topic: Identify a tower....
Replies: 3
Views: 308

Re: Identify a tower....

Sorry. I forgot to mention each section is 6m in length...
by waveguide
Tue Oct 17, 2017 8:45 am
Forum: FM Radio
Topic: Identify a tower....
Replies: 3
Views: 308

Identify a tower....

Hi.
Does anyone here know who makes this type of tower?
1.2m width and each leg is 3inchs width.

https://imgur.com/a/W9eUY


Thanks
by waveguide
Thu Aug 31, 2017 5:13 am
Forum: FM Radio
Topic: Audemat FMB80 RDS and RCS..
Replies: 3
Views: 458

Audemat FMB80 RDS and RCS..

Hello, I'm trying to get RCS MAstercontroll to output data to my FMB80 RDS unit but I'm having no luck (to display Radiotext Now playing). Anyone know what format of ASCII data I need to send via the UDP stream? And how do I configure my FMB80? I've created a port on the FMB80 set to receive the UDP...
by waveguide
Wed Jun 07, 2017 1:43 pm
Forum: FM Radio
Topic: Cleaning old connectors...
Replies: 1
Views: 371

Cleaning old connectors...

Hi all,
I have a box of cut off connectors which have been salvaged over the years. Andrews, RFS ect....
Some of which have the Butyl rubber on them and would take quite a bit of effort to clean them up.
Any suggestions as to what will remove Butyl/Plasty and some even have Denzo.

Thanks
by waveguide
Tue May 09, 2017 1:02 pm
Forum: Radio Studio Engineering
Topic: Bluetooth interface...
Replies: 1
Views: 289

Bluetooth interface...

Hi,
Does anyone know of a professional 2 way (duplex) bluetooth interface - something you could pair up and hook up an line/mic input and take an output from? There's a bunch of stuff on eBay, but I'm looking for a professional build unit.

Thanks
by waveguide
Wed Apr 05, 2017 2:21 pm
Forum: FM Radio
Topic: SWR/Return loss question???
Replies: 7
Views: 671

Re: SWR/Return loss question???

No change with the unused port open - or terminated with a dummy load.
My understanding is its recommend to terminate it with a test load. Is this correct - and why?

Thanks
by waveguide
Wed Apr 05, 2017 1:40 pm
Forum: FM Radio
Topic: SWR/Return loss question???
Replies: 7
Views: 671

Re: SWR/Return loss question???

Thanks everyone. That helps a lot.
That level of reflection doesnt concern me too much, but I'd like it to be 0!
The transmitter were using (Rhode and Schwarz) has a very low threshold for VSWR protection! It'll go into protect mode for the smallest reflection!
by waveguide
Sat Apr 01, 2017 1:16 pm
Forum: Internet Streaming
Topic: Streaming monitoring?
Replies: 2
Views: 408

Streaming monitoring?

Hi,
Does anyone know of a low cost (or better still - FREE!) software package to monitor a webstream?
Something that can send an email - or even be monitored via SNMP?
I dont want to simply play the stream and use a virtual patch with a silence detector - it need to be an all in one package.

Thanks!
by waveguide
Sat Apr 01, 2017 1:11 pm
Forum: FM Radio
Topic: SWR/Return loss question???
Replies: 7
Views: 671

Re: SWR/Return loss question???

Thanks,
Its actually a combined site, two hybrid combiners - there was three FM service, now there's only two. The end of chain wideband input is unused.
It's probably an idea to look at doing a full sweep of the antenna system - and the combiners - one by one.
by waveguide
Fri Mar 31, 2017 1:55 pm
Forum: FM Radio
Topic: SWR/Return loss question???
Replies: 7
Views: 671

SWR/Return loss question???

Hi everyone, Im seeing a small amount of reflected power on an antenna system - 1500watts FWD - and 20w REF - its at the top of the band and 106.9Mhz so I'm thinking maybe 106.9 is approaching the upper limit of the antenna (Sira dipole). I managed to reduce the reflection from 20watts to 4watts by ...
by waveguide
Wed Feb 15, 2017 2:51 pm
Forum: FM Radio
Topic: Phasing receive antenna for translator
Replies: 1
Views: 350

Phasing receive antenna for translator

Hi, Quick question... I have a translator, which is currently struggling to receive a good clear signal to rebroadcast. I'm seeing a noise 35db on receive, (no desensitization happening), receive yagi gain is 5.5db. If I use two yagis together (side to side), am I correct in thinking a second yagi w...
by waveguide
Fri Jul 01, 2016 3:39 am
Forum: FM Radio
Topic: Cable phasing...
Replies: 1
Views: 392

Cable phasing...

Hi everyone, Maybe someone can help me out and answer this for me.... One of our stations has a straight forward 2 dipole antenna system, no beam tilt and a straight forward 50/50 split at the power divider. Now the power divider is in the TX hall, so there's two feeders coming down the tower to the...
by waveguide
Mon May 16, 2016 1:53 pm
Forum: Radio Studio Engineering
Topic: Digital "white boards"/noticeboard?
Replies: 1
Views: 375

Digital "white boards"/noticeboard?

Hi, I'm looking at replacing the old ugly whiteboard in studio with a PC based system, running over KVM extenders while running off a server. Basically it just needs to scroll between a couple of pages of text, allowing different colours and fonts. I know notepad, word and powerpoint will kind of do...
by waveguide
Wed Apr 20, 2016 12:30 pm
Forum: FM Radio
Topic: Antenna stacking spacing...
Replies: 10
Views: 1565

Re: Antenna stacking spacing...

Thanks guys,
Can someone explain,the basic theory? And whats the effect on the radiation pattern?

WG