I haven't read the detail, but I imagine it is good news for blue-water sailors.
www.amsa.gov.au/news-community/news-and-media-releases/hf-radiotelephone-monitoring-australia
This is really interesting, maybe an acknowledgement that reliance on beacon alone is bull**** in Australia.
Now if they did position reports twice a day on 2 and 4 mhz we would be back to what we had in 1975.
Although they don't say what stations are listening so might need to make sure 6 and 8 mhz are working.
VMC is fair way from the coast.
Lucky I have 2 spare HF sets in the shed.
I'm looking for one in case you're interested in selling.
Is it wrong to think HF is still kinda cool?
Awesome capability with a knowledgeable operator.
From someone who uses HF almost daily for work, I can't understand why we are still using it. Often I wish I was carrying a pigeon with a note around its leg to throw out the window.
Is it wrong to think HF is still kinda cool?
Awesome capability with a knowledgeable operator.
as much art as science and that is true point!
Lucky I have 2 spare HF sets in the shed.
I'm looking for one in case you're interested in selling.
Hfradio.com.au
Has 2nd hand marine sets for sale.
The older Conan are my favourite and built to a different Standard to the newer icom.
But installation is everything.
Is it wrong to think HF is still kinda cool?
Awesome capability with a knowledgeable operator.
From someone who uses HF almost daily for work, I can't understand why we are still using it. Often I wish I was carrying a pigeon with a note around its leg to throw out the window.
I spent years using HF in my Navy days. It can't be relied on when you need it. I used a satphone on MB.
If anyone has a HF and can't get out work here is what has worked for me over 30 years in different boats even where we have ended up the relay vessel in extreme rescue situations for emergency services.
The power lead to the set is direct from the best battery, no switches no fuses but a integral fuse built in to the lead (carry a spare but never had to use it) ie no joins anywhere.
Put the auto tuner directly under the antenna so the leads is as short as possible (10 cm max) not metres away at the nav table.
Use car distributor lead cable as antenna cable (high quality wire with max insulation) Some I know wrap the antenna cable in foil and put in a pvc conduit between the set and the tuner.
Have the longest ground strap you can fit in the boat. (No a fan of ground plates)
Have had best results with Moonraker 6m antenna rather than backstay antenna (understand antenna length and what the tuner does and why it matters for each frequency)
Not sure about this one as Shaggy will explain differently so might be a wives tale make sure there is a lanyard in the lifelines especially is using 6mhz or above.
It is also the only electrical system on the boat which I clean the contacts regularly each year.
others will have different views but the only right set up is the one that work for your boat you just have find it as all boats are different.
So for our upcoming winter cruise from NSW to the Whitsundays and hopefully the Swain Reefs would you guys go HF or Satphone? I'm thinking Satphone because I don't have a Hf license and even if I still have the old hf set somewhere it needs installation and new frequency crystals iirc
So for our upcoming winter cruise from NSW to the Whitsundays and hopefully the Swain Reefs would you guys go HF or Satphone? I'm thinking Satphone because I don't have a Hf license and even if I still have the old hf set somewhere it needs installation and new frequency crystals iirc
If you get in trouble you will use a beacon so HF or satphone are only a communication tool. HF is an unreliable communication method and you can't call home with it.
I used a satphone to Lord Howe each time. Rang my wife or sister daily to get a weather report and let them know where we were/conditions etc. They could leave messages for me to call if needed, although we didn't need to.
So for our upcoming winter cruise from NSW to the Whitsundays and hopefully the Swain Reefs would you guys go HF or Satphone? I'm thinking Satphone because I don't have a Hf license and even if I still have the old hf set somewhere it needs installation and new frequency crystals iirc
If you get in trouble you will use a beacon so HF or satphone are only a communication tool. HF is an unreliable communication method and you can't call home with it.
I used a satphone to Lord Howe each time. Rang my wife or sister daily to get a weather report and let them know where we were/conditions etc. They could leave messages for me to call if needed, although we didn't need to.
Actually you can call home with the right HF unit but its a bit clunky.
Other than that, I agree with the rest of MB post. If you are considering one or the other I would have the sat phone. The HF may be expensive to buy and free (its not really) to operate whereas the sat phone is cheap to buy and expensive to operate, the overall operating cost of the sat phone may well be cheaper.
Up along the East coast on the winter pilgrimage, there are so many boats you'll almost always get someone on VHF..
So for our upcoming winter cruise from NSW to the Whitsundays and hopefully the Swain Reefs would you guys go HF or Satphone? I'm thinking Satphone because I don't have a Hf license and even if I still have the old hf set somewhere it needs installation and new frequency crystals iirc
Hi Chris,
I've only ever used a Satphone for offshore comms. The only negative with a satphone is they are a one to one communication system akin to a phone, no broadcast capability like VHF or HF.
I ended up with a satellite hotspot and my normal mobile wirelessly connected, as I got sick of standing in one position to have a phone call
. Easier to align the hotspot antenna and then you can walk around normally with your phone.
Was the only source of communicating when I was racing . No mobiles ,ais,mmsi back then. Second nature to use.
God I'm old. Great comfort factor knowing someone will hear you but not sure thesedays if other vessels don't have them . Do commercial ships listen to them still?
BTW I meant to advise few years back there was talk that you needed a current radio licence that includes knowledge of mmsi etc. to get an mmsi number. Wrong. My ROCPR ,which includes hf/vhf etc, issued in the seventies was accepted by amsa
I miss the old Penta Comstat days, when we would line up and talk to Dereck or Jeanine. Then you would see a boat and go "Oh you are on the sked" and have a chat.
I am a pretty bad radio person though, I only tend to use them when I want to say something, otherwise the VHF gets turned off or down low. I now have a DSC radio so that should wake me up if anyone puts out a distress call. I can see a real benefit to having a public forum where people can share weather info, but that is less useful now that Meteye is so good. For a rally I can see a benefit but you could probably use VHF for a bit of that.
Yep, grew up with the Penta Comstat days.
On deliveries always had evening drunks at sked time.
Still have copies of the Penstat Radio books
A kinda side note to this.... I'm reading some pretty interesting stuff about the migration to digital for Australia's JORN radar system (the JIndalee 'over the horizon' radar network).
I didn't realise (even though in hindsight its kinda logical) it uses good ol' HF as the frequency band. Hence why the ionosphere is so important, they have a nuts amount of radars that just map the ionosphere as part of the system.
The size of the system is pretty impressive, there are 2,500 RF receivers they are upgrading to digital so not a small project.. But, if I am reading this right, the detection range now extends up as far as the Sth China sea. That's double the old 3000km range they used to throw about.
Its a shame in a way its going digital as the all important analogue RF receivers were Aussie inventions and apparently world class.
So all we need is an ionosphere mapping radar and a phased array HF transmitter to be made small enough to fit in the nav station and we're good to go!
That is what people don't understand with HF, you can be too close or not far enough away,
That is why the Hobart Green Cape rule is bull****.
Spoke to a experienced commercial HF operator who did the 1998 Melbourne Hobart, once, he told be about trying to get a signal out at the height of the gale they had south of Maatsuyker with incredible atmospherics.
8 mhz plus, engine full revving trying to get more transmission power, backstay aerial gleaming in the darkness.
It is not what signal you sent out but where you land it.
That is what people don't understand with HF, you can be too close or not far enough away,
.
For context, I was a radio operator on Her Majesty's Australian Submarines. Agreeing with Lydia - specifically, it's all in the bounce off the ionosphere. Some days exercising off Cape Jervis you'd expect NAVCOMSTA Canberra would be the obvious (nearest) option for HF ship-to-shore, but get Darwin instead. And often less power is better, not more. Then at night, everything changes after sunset as the ionising effect from the sun is reduced, changing the atmosphere's layers. In other words, HF requires a bit of skill to understand its quirks - good fun if you like tinkering. But give me a satellite phone or router any day, to keep things simple and (mostly) reliable.
That is what people don't understand with HF, you can be too close or not far enough away,
.
For context, I was a radio operator on Her Majesty's Australian Submarines. Agreeing with Lydia - specifically, it's all in the bounce off the ionosphere. Some days exercising off Cape Jervis you'd expect NAVCOMSTA Canberra would be the obvious (nearest) option for HF ship-to-shore, but get Darwin instead. And often less power is better, not more. Then at night, everything changes after sunset as the ionising effect from the sun is reduced, changing the atmosphere's layers. In other words, HF requires a bit of skill to understand its quirks - good fun if you like tinkering. But give me a satellite phone or router any day, to keep things simple and (mostly) reliable.
Cheers, nice to have such high level support.
I had given up trying to explain what you just said to yacht race organisers years ago.
But I grew up with it so am still very fond of it.
there was the ritual of waiting for for the sun to go down and the world come alive.
Still a kick when you do the impossible.
One year for a while we could run a sked for boats returning from the Osaka race from Manly Qld when they were in a cyclone south of Guam.
On a different issue you would be surprised how you can bounce a 27 mhz signal as well.
I will get a pic tomorrow of the "Dover Radio" "inverted V" antenna that uses an old Dragon mast to hold it all up.
impressive kit!
Jeremy and Penny run HF skeds (at request) for the Southern Ocean and to Patagonia from their house just up the road.
Great info and it confirms that we'll go for the satphone option.
We have sat phone as well but only one person gets to listen.
Although the one we use as a great function, two key strokes to send position to an assigned group of numbers.
Always nice to know who is nearby though notwithstanding AIS
Was a Pentaconstat member now TAS Maritime - RG 590
Out.
So for our upcoming winter cruise from NSW to the Whitsundays and hopefully the Swain Reefs would you guys go HF or Satphone? I'm thinking Satphone because I don't have a Hf license and even if I still have the old hf set somewhere it needs installation and new frequency crystals iirc
What old set, older Wagner for instance can punch out far more power than newer sets if needed.
Like the older Codans
If it a Codan and you get the EPROM sorted, excellent piece of kit.
That is what people don't understand with HF, you can be too close or not far enough away,
.
For context, I was a radio operator on Her Majesty's Australian Submarines. Agreeing with Lydia - specifically, it's all in the bounce off the ionosphere. Some days exercising off Cape Jervis you'd expect NAVCOMSTA Canberra would be the obvious (nearest) option for HF ship-to-shore, but get Darwin instead. And often less power is better, not more. Then at night, everything changes after sunset as the ionising effect from the sun is reduced, changing the atmosphere's layers. In other words, HF requires a bit of skill to understand its quirks - good fun if you like tinkering. But give me a satellite phone or router any day, to keep things simple and (mostly) reliable.
I flew Grumman Trackers from 1973 until 1984. Were you on O boats or Collins?
It wasn't uncommon when operating in the East Australia Exercise Area to get Clark USAF base in the Philippines or a station in Hawaii and nothing in between. The ionosphere or maybe a ground wave rules what reception you get.
I flew Grumman Trackers from 1973 until 1984. Were you on O boats or Collins?
It wasn't uncommon when operating in the East Australia Exercise Area to get Clark USAF base in the Philippines or a station in Hawaii and nothing in between. The ionosphere or maybe a ground wave rules what reception you get.
I was on both. I did the commissioning trails of HMAS Farncomb (boat #2 of the Collins class), but got my dolphins (submarine qualification) on HMAS Onslow (now in the National Maritime Museum - Sydney). Having your old workplace/home in a museum is a sobering reminder of my own ageing process :)
I know ROs who got QSL cards from ham operators in the West Coast USA, so yep...it can go a long way.
On a different issue you would be surprised how you can bounce a 27 mhz signal as well.
The HF frequency range is from 3 - 30MHz, so yes not surprising.
On a different issue you would be surprised how you can bounce a 27 mhz signal as well.
The HF frequency range is from 3 - 30MHz, so yes not surprising.
If I look at the frequency scale, the next 'system' in that low frequency band next to HF would be ...what?
VHF (of course) - 30 to 300mhz.
Terrestrial TV - 45-860mhz.
I am sure there are others, but stuff like mobiles and wireless network are all ghz stuff.
What I find interesting is the difference in RF transmission characteristics or performance. Nothing else has anywhere near the mannerisms of HF transmission. Yet VHF and TV are pretty close to the same band at least, and I wouldn't expect that much of a difference.
Question form the peanut gallery for you more experienced chaps, Is the higher order bands (like 30mhz) used that often in HF communications? Or does it kinda suck so much it is not used?
Cheers!
SB