Jump to content

pwstereo

3RRR reception in East Gippsland?

Recommended Posts

20 hours ago, surprisetech said:

Wow, that's going to be a challenge.

However, if your loop gets some reception, then the tuned Yagi might do the job. You could also try adding a good quality VHF masthead amp if the Yagi doesn't quite get you there.

Make sure the antenna impedance matches the tuners antenna input impedance

Yes, it is a challenge 🙂

I built the 6 element Yagi, it has a folded dipole as the driven element, so a 300 Ohm feedpoint impedance, that is connected to the RG6 coax by a balun, so impedance and balanced to unbalanced is taken care of.

 

I propped it up on my back porch on a bargeboard mount (just sitting on the concrete and resting in the corner of the handrailing), so the antenna was about 2 metres above the concrete and it was very close to metal window and door frames on one side.

Connected to the Denon receiver I had very noisy results, but could understand talking and music easily enough. Tried it on the Rotel and it was slightly better.

 

I'm going to need a bigger mast, and to get it clear of the house.

Back in the days of VHF TV, people here used 30 and 50 foot masts with phased array antennas to receive Melbourne TV from Mt Dandenong, but the transmitter power of those was way more than a community FM station like RRR or PBS. I'm still hopeful, but I know it will be a challenge.

 

I did make an enquiry about a masthead amp that someone on these forums was making and tuning to particular bands, but have not heard any news about how succesful they were in practice.

 

 

 

Share this post


Link to post
Share on other sites

Some further experiments were conducted today.

I found a 30 foot telescopic mast, so I mounted the antenna at the top and extended the top section (so I had a 20 foot mast).

I walked it up against the back porch and secured it temporarily (nice windless day) to the porch railing.

The antenna was now well clear of any part of the house and I was able to rotate it easily from the back porch.

 

On the Rotel tuner I had 1 out of 5 signal strength LEDs lit for 3RRR, and a listenable but noisy mono signal, it wasn't enough to open the muting or get stereo.

I tried other Melbourne FM stations and with the exception of 3JJJ they were all similar in strength and sound quality to 3RRR, (3JJJ on the Melbourne frequency would show 3 LEDs and was much stronger than any other station).

 

So, I'm a bit more hopeful that with a masthead preamp and the 30 foot mast properly erected I might get listenable 3RRR.

Edited by pwstereo
spelling

Share this post


Link to post
Share on other sites
On 23/02/2019 at 8:55 AM, pwstereo said:

I did make an enquiry about a masthead amp that someone on these forums was making and tuning to particular bands, but have not heard any news about how succesful they were in practice.

Yes, I put my hand up for one of those too.

Share this post


Link to post
Share on other sites
4 minutes ago, surprisetech said:

Yes, I put my hand up for one of those too.

So you didn't hear any more or get one?

 

I've been looking at the commercial amps like Kingray, but none seems specially made for the FM broadcast band. Many of the TV ones seem to actually have blocking filters for the FM band, although a couple of models had a jumper you could move to pass and amplify the FM band.

Share this post


Link to post
Share on other sites
On 15/02/2019 at 8:57 PM, proftournesol said:

I certainly don't get reception in the Ovens Valley but just stream it. Have you good enough internet for that option?

Last night I tried streaming 3RRR, using their high bitrate option, it cut out a few times, then I repeatedly got server errors instead of the player in my browser window. So I'm thinking their streaming isn't too reliable. I had previously used the high bitrate stream a few times and it was OK.

Share this post


Link to post
Share on other sites
Moderator

I've never had issues with streaming that weren't issues at my end

Share this post


Link to post
Share on other sites


3 hours ago, pwstereo said:

So you didn't hear any more or get one?

 

I've been looking at the commercial amps like Kingray, but none seems specially made for the FM broadcast band. Many of the TV ones seem to actually have blocking filters for the FM band, although a couple of models had a jumper you could move to pass and amplify the FM band.

No, didn't hear any more and forgot to follow up.

I couldn't find any dedicated FM band masthead amps either, so I used a Kingray MHW25FE with the FM trap disabled and let the antenna and tuner do the filtering.  It's the simplest model with one input and one output and will give you at least 22dB gain across the whole FM band.

Share this post


Link to post
Share on other sites

Having gone to the effort of constructing the yagi, I do hope a masthead amp will help, but do be aware that there is a point where the ratio of wanted signal to in-channel noise is so poor that a masthead amp may not help because it is going to boost the in-channel noise and the signal equally.

Which side of that line you reside on remains to be seen!

Share this post


Link to post
Share on other sites

I cut out all the "middle men" in transmission and went in person to Jon Von Goes annual RRR BBQ live to air special at CERES environment park on Sunday, fortunately I live closeby! Beer in hand and experienced the bands live!!

Much hilarity ensued!

Tim Chuma will have his photos up soon

http://photos.timchuma.com/

https://www.facebook.com/timchumaphotography/

play back the live to air, in the second hour the band and guests really hit their stride!

https://www.rrr.org.au/explore/programs/jvg-radio-method

regards Ian

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By JohnK1
      Hi all.
      I've installed a new antenna Jaycar LT3182 91 element job, after doing a bit of research on the net. On our main TV (Sony) the signal quality is 100%, while signal strength is between 90 - 100% for all channels. Another TV (Palsonic) installed in the bedroom however, drops out on some channels, picture breakup, loss of signal. I've replaced the cable to it which made no difference. Yet another TV (Sony) in the office is OK.
      I find it hard to believe the signal isn't strong enough, in fact I've read that too strong a signal may result in the same symptoms. Any advice greatly appreciated!
    • By zandahar
      Long time lurker but just got asked a question and thought no better place to post it. Friend of mine is having a huge number of double story units being built right behind them which appears to have just completely toasted any of the tv signal. The timing matches perfectly with the top level going up and the bricks and roof being done. He has an external antenna relatively new and been working fine and has tried pulling a new run of cable but no difference. Even tried a powered booster suposedly and no dice. Thought it may have been the TV originally so bought a new one and same deal.
      If you can rule everything else out and looks to be the new building impacting the signal is there anything that can be done ? By that I mean approaching someone and logging a complaint and who knows maybe make the developer pay to put up a mast for the antenna ? Even without pursuing the jumping up and down route any other suggestions ? Relocating the antenna is a possibility but by the description of the layout and position of the two properties its unlikely to help.
    • By marchino61
      I have been using to DAB in Perth for more than 4 years. I live in East Victoria Park.
      I most often listen to three ABC stations: News Radio, Radio National and 720 Perth. I have two receivers, one upstairs in my bedroom and the other downstairs.
      Until the last 3 or 4 week, I had flawless reception. Now I get regular drop outs on all three stations, sometimes lasting more than 1 minute, on both radios.
      Is anyone aware of any issue which would have caused these problems to flare up in the last few weeks? Is anyone else having the same problem?
    • By et tu Brute
      Good points MLXXX, a few people stopped getting excited about this forum due to the stupidity of others. Forum moderators are responsible for this mainly, I've also seen much advice and no field experience coming from said person. I don't like being told "remember" hey I do this job everyday. I have some great friends who are former broadcast engineers. I like to study different products to come up with viable solutions to simple issues. But I know I can be arrogant hence my comment about my experience the ones on here that seem to know the most only use it when necessary and with discernment, rather than pretending to be an authority.
    • By et tu Brute
      Our reception for all channels goes from okay one moment to zilch for a day or so and revert to okay. This has been going on for the last 3 weeks. Left voice mail for our antennae repairer last week and still waiting for a call back. We are within 1.5km line of sight from the Bruxner Park Transmission towers, but too far away (26km?) From Mt. Moobil to the South of Coffs. Some days only the ABC and SBS channels are being received and tonight we are only getting the ABC1 channel, somewhat pixelated. Coincidently perhaps, but we have notice a drop in performance from Bruxner Park after each upgrade, particularly since the introduction of the shopping channels & the racing channel (68). I wouldn't have thought these mattered considering our close proximity to the transmission tower. Prior to the shutdown of the analogue services and the first major overhaul, our reception was first class on all channels.
      If anyone else locally receiving their signals from Bruxner Park, I would be interested in hearing from you regarding the quality of service you are receiving.
      Cheers
×