# Radio Data System (RDS) **URL:** \ **Category:** General Radio and Digital\ **Created:** [December 28, 2015, 7:43am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237 "2015-12-28T07:43:12Z")\ **Posts on this page:** 20\ **Page:** 20
**Author:** ![crankymedia](https://forums.mediaspy.org/letter_avatar_proxy/v4/letter/c/35a633/32.png) [@crankymedia](https://forums.mediaspy.org/u/crankymedia)\ **Post date:** [September 24, 2017, 3:10am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/386 "2017-09-24T03:10:28Z")
> [@TV.Cynic](#): > > 19:48:19 MELT WITH YOU - MODERN ENGLISH > > 19:48:39 UPDATE: Bushfire WATCH and ACT How ironic. ---
**Author:** ![Vidiot](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/vidiot/32/459050_2.png) [@Vidiot](https://forums.mediaspy.org/u/Vidiot)\ **Post date:** [September 24, 2017, 4:14am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/387 "2017-09-24T04:14:48Z")
> [@AustralianAerial](#): > > Melbourne has no alternate frequencies, save for the few inner-city relays which are SFNs anyway What inner city relays? We’re talking FM here not DAB+ ---
**Author:** ![AustralianAerial](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/australianaerial/32/427176_2.png) [@AustralianAerial](https://forums.mediaspy.org/u/AustralianAerial)\ **Post date:** [September 24, 2017, 4:16am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/388 "2017-09-24T04:16:43Z")
Fox and Triple M have relays on the Rialto building - [https://web.acma.gov.au/rrl/site\_search.site\_lookup?pSITE\_ID=11599&pSORT\_BY=frequency&pSORT\_DIR=asc](https://web.acma.gov.au/rrl/site_search.site_lookup?pSITE_ID=11599&pSORT_BY=frequency&pSORT_DIR=asc) ---
**Author:** ![melbournefan](https://forums.mediaspy.org/letter_avatar_proxy/v4/letter/m/bcef8e/32.png) [@melbournefan](https://forums.mediaspy.org/u/melbournefan)\ **Post date:** [September 24, 2017, 5:06am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/389 "2017-09-24T05:06:19Z")
They are ‘Backup’ relays. ---
**Author:** ![crankymedia](https://forums.mediaspy.org/letter_avatar_proxy/v4/letter/c/35a633/32.png) [@crankymedia](https://forums.mediaspy.org/u/crankymedia)\ **Post date:** [September 24, 2017, 10:59am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/390 "2017-09-24T10:59:53Z")
@melbournefan Thanks for being the voice of reason. ---
**Author:** ![Vidiot](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/vidiot/32/459050_2.png) [@Vidiot](https://forums.mediaspy.org/u/Vidiot)\ **Post date:** [September 25, 2017, 1:02am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/391 "2017-09-25T01:02:17Z")
> [@AustralianAerial](#): > > Fox and Triple M have relays on the Rialto building AS Melbourne Fan says these are back-up sites in case Mt Dandenong is wiped out. They are not normally on air in any capacity ---
**Author:** ![tonks8526](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/tonks8526/32/153105_2.png) [@tonks8526](https://forums.mediaspy.org/u/tonks8526)\ **Post date:** [September 25, 2017, 4:55am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/392 "2017-09-25T04:55:51Z")
It’s not possible to have FM relays on the same frequency (other than road tunnels where relays work well as the original signal is completely unavailable). It would cause all sorts of issues with echo and signal cancellation. You notice it driving into the City Link tunnels that there is sometimes quite an audible echo or brief loss of signal as you enter the tunnels and the FM relay kicks in. ---
**Author:** ![anon71206228](https://forums.mediaspy.org/letter_avatar_proxy/v4/letter/a/e9a140/32.png) [@anon71206228](https://forums.mediaspy.org/u/anon71206228)\ **Post date:** [September 25, 2017, 5:33am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/393 "2017-09-25T05:33:15Z")
> [@tonks8526](#): > > It’s not possible to have FM relays on the same frequency (other than road tunnels where relays work well as the original signal is completely unavailable). It would cause all sorts of issues with echo and signal cancellation. That’s not true, there are some FM SFN’s in Europe. I think there’s at least 1 in Australia (but I can’t remember where). There’s a broadcast engineer in Brisbane that I sometimes work with, who knows how to do it properly, & through my processor, I have the ability to run 2 identical feeds out with different timings to suit an FM SFN. There will be an echo/signal cancelation spot, but you engineer it to be in an area of little significance. In the cities, there’s reflected signals bouncing around off tall buildings everywhere anyway, giving the same effect as an SFN. ---
**Author:** ![Petarkco](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/petarkco/32/220380_2.png) [@Petarkco](https://forums.mediaspy.org/u/Petarkco)\ **Post date:** [September 25, 2017, 6:07am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/394 "2017-09-25T06:07:36Z")
> [@tonks8526](#): > > You notice it driving into the City Link tunnels that there is sometimes quite an audible echo or brief loss of signal as you enter the tunnels and the FM relay kicks in. Which is also used for tunnel announcements: [![](https://img.youtube.com/vi/hF6caeu_y9Q/maxresdefault.jpg "Sydney M5 tunnel inbound incident radio announcement") ](https://www.youtube.com/watch?v=hF6caeu_y9Q) ---
**Author:** ![tvcl](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/tvcl/32/9549_2.png) [@tvcl](https://forums.mediaspy.org/u/tvcl)\ **Post date:** [September 25, 2017, 6:29am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/395 "2017-09-25T06:29:12Z")
> [@anon71206228](#): > > That’s not true, there are some FM SFN’s in Europe. In addition to FM SFNs, AM SFNs are also possible – for example, BBC Radio 4 on 198 kHz has multiple overlapping transmitters on the same frequency. > [@anon71206228](#): > > I think there’s at least 1 in Australia (but I can’t remember where). Probably not a proper SFN by design, but the Islamic LPONs on 87.6 and the Spanish LPONs on 87.8 in Sydney essential act as SFNs as they have numerous overlapping transmitters in Sydney all on the same frequency. ---
**Author:** ![TV.Cynic](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/tv.cynic/32/316932_2.png) [@TV.Cynic](https://forums.mediaspy.org/u/TV.Cynic)\ **Post date:** [September 25, 2017, 6:47am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/396 "2017-09-25T06:47:57Z")
> [@tvcl](#): > > AM SFNs are also possible ABC Wide Bay and Eidsvold are a SFN on 855. ---
**Author:** ![webguy](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/webguy/32/4778_2.png) [@webguy](https://forums.mediaspy.org/u/webguy)\ **Post date:** [September 25, 2017, 7:03am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/397 "2017-09-25T07:03:16Z")
> [@anon71206228](#): > > I think there’s at least 1 in Australia (but I can’t remember where). In Victoria, the “southern” frequency for 3SUN - Hit Shepparton/Goulburn Valley. It broadcasts on 93.7 from Mansfield, Alexandra and Yea. It was largely implemented to provide a single frequency for travelers to Mount Buller once you get out of range of the Melbourne stations. EDIT: The Alexandra license is no longer listed in the ACMA database. ---
**Author:** ![littlegezzybear](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/littlegezzybear/32/219836_2.png) [@littlegezzybear](https://forums.mediaspy.org/u/littlegezzybear)\ **Post date:** [September 25, 2017, 7:11am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/398 "2017-09-25T07:11:36Z")
KCSN Los Angeles and KSBR Orange County are both on 88.5 and had for many years suffered terrible interference with each other. A couple of weeks ago they solved the issue by effectively merging and creating a SFN of three transmitters on 88.5 which continues with the KCSN altenative rock programs. The KSBR jazz programs continue on the HD2 channels. They also have a three transmitter SFN on 89.9 to the north west of LA. > **[L.A.'s Triple A Station KCSN Massively Expands Reach, Partnering With KSBR:...](https://www.billboard.com/articles/business/7957096/las-triple-a-station-kcsn-massively-expands-reach-partnering-with-ksbr)** > > The Triple A non-commercial radio station out of L.A.'s Cal State Northridge is expanding its listener reach from 3 million to a whopping 11.5 million and claims its the "largest coverage area expansion in public radio history.'" ---
**Author:** ![tonks8526](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/tonks8526/32/153105_2.png) [@tonks8526](https://forums.mediaspy.org/u/tonks8526)\ **Post date:** [September 25, 2017, 7:27am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/399 "2017-09-25T07:27:16Z")
> [@anon71206228](#): > > That’s not true, there are some FM SFN’s in Europe. I think there’s at least 1 in Australia (but I can’t remember where). Thanks for the info. Didn’t realise it was commonly done despite the technical limitations. ---
**Author:** ![Radiohead](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/radiohead/32/21429_2.png) [@Radiohead](https://forums.mediaspy.org/u/Radiohead)\ **Post date:** [September 25, 2017, 8:58am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/400 "2017-09-25T08:58:21Z")
> [@anon71206228](#): > > I think there’s at least 1 in Australia (but I can’t remember where). Is ABC News on 94.5 covering all of the Sunshine Coast and Gympie areas using 2 Tx sites be the one you’re thinking of? ---
**Author:** ![melbournefan](https://forums.mediaspy.org/letter_avatar_proxy/v4/letter/m/bcef8e/32.png) [@melbournefan](https://forums.mediaspy.org/u/melbournefan)\ **Post date:** [September 25, 2017, 9:00am UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/401 "2017-09-25T09:00:25Z")
Also there is a SFN for Victoria Police that is used as a Voting network for their analog comms. V/Line also used to have a SFN for their Train To Centrol comms. ---
**Author:** ![TV.Cynic](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/tv.cynic/32/316932_2.png) [@TV.Cynic](https://forums.mediaspy.org/u/TV.Cynic)\ **Post date:** [September 25, 2017, 1:23pm UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/402 "2017-09-25T13:23:05Z")
RDS from some stations carrying the hit program in SEQ tonight ![hit105](https://mediaspy-org-s3.s3.dualstack.ap-southeast-2.amazonaws.com/original/3X/a/e/aea08c5c4fcd30e85c51a4790e30838529b92295.JPG) ![hit1019 3](https://mediaspy-org-s3.s3.dualstack.ap-southeast-2.amazonaws.com/original/3X/2/a/2a58fd9472eebce1f3e98b995511dd6e47620bfd.JPG) ![hit891 1](https://mediaspy-org-s3.s3.dualstack.ap-southeast-2.amazonaws.com/original/3X/9/6/9610c9399e2762a686b0ce3747e6bfb9d57841ec.JPG) 90.9 ![sea 909](https://mediaspy-org-s3.s3.dualstack.ap-southeast-2.amazonaws.com/original/3X/e/d/ede2a74e9dc03d1add750c7395d74099497e101a.JPG) 91.9 ![sea919](https://mediaspy-org-s3.s3.dualstack.ap-southeast-2.amazonaws.com/original/3X/9/c/9ce2de16088963ad683d7a6c3d5386335ee58ddb.JPG) 93.1 ![sea 931 1](https://mediaspy-org-s3.s3.dualstack.ap-southeast-2.amazonaws.com/original/3X/2/d/2d1d2d307df31eb36b5fcd9255ea4680a59e3f6e.JPG) ---
**Author:** ![melbournefan](https://forums.mediaspy.org/letter_avatar_proxy/v4/letter/m/bcef8e/32.png) [@melbournefan](https://forums.mediaspy.org/u/melbournefan)\ **Post date:** [September 25, 2017, 10:32pm UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/403 "2017-09-25T22:32:16Z")
For a minute there, I thought I was seeing some Dx’ing. ---
**Author:** ![TV.Cynic](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/tv.cynic/32/316932_2.png) [@TV.Cynic](https://forums.mediaspy.org/u/TV.Cynic)\ **Post date:** [September 27, 2017, 2:40pm UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/404 "2017-09-27T14:40:02Z")
Gladstone RDS from tonight ![hit 935 glad](https://mediaspy-org-s3.s3.dualstack.ap-southeast-2.amazonaws.com/original/3X/a/5/a5e6a4392e01fd6641fe591d841fa88476e3c782.JPG) ![mmm glad 2017](https://mediaspy-org-s3.s3.dualstack.ap-southeast-2.amazonaws.com/original/3X/3/5/356d86f99a980ef1d933a1cfa3486f53ec873c98.JPG) ---
**Author:** ![Radiohead](https://forums.mediaspy.org/user_avatar/forums.mediaspy.org/radiohead/32/21429_2.png) [@Radiohead](https://forums.mediaspy.org/u/Radiohead)\ **Post date:** [September 27, 2017, 6:08pm UTC](https://forums.mediaspy.org/t/radio-data-system-rds/237/405 "2017-09-27T18:08:04Z")
You’ve done well to get those from Brissy with RDS since they are only 1kw! [Previous page](https://forums.mediaspy.org/t/radio-data-system-rds/237.md?page=19) [Next page](https://forums.mediaspy.org/t/radio-data-system-rds/237.md?page=21)