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Single Side Band HF transceiver ICOM IC-735 model BS300A

Created by Bundeenabuoy Bundeenabuoy  > 9 months ago, 31 Mar 2021
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Bundeenabuoy
Bundeenabuoy

NSW

1239 posts

31 Mar 2021 10:43pm
I have this HF radio onboard Spindrift.
If anyone has some working knowledge of it and would like to meet me at the CYCA, please send me an email.
nswsailor
nswsailor

NSW

1458 posts

31 Mar 2021 10:48pm
?????
lydia
lydia

1927 posts

1 Apr 2021 4:16am
Do you have the Freq card.
they are group together when programmed and groups reflect usage in different parts of the world
Charriot
Charriot

QLD

880 posts

1 Apr 2021 1:56pm
Beautiful very powerful HF transceiver. Typical wide band from .1 MHz to 30 MHz continues, all types of modulation.
For full power requires 20amps from bat.
Receiver is wide range but transmitter as per Aus. law is limited to marine or amateur bands. Sometimes there is the unit reprogrammed to all over.
That would be a gold. As we know HF marine is dead, apart of weather and coast guard, believe, still monitor 2182kHz.
Now , how well is receiver working, transmitter can test on short waves.
Bundeenabuoy
Bundeenabuoy

NSW

1239 posts

2 Apr 2021 8:37am
Select to expand quote
lydia said..
Do you have the Freq card.
they are group together when programmed and groups reflect usage in different parts of the world


Could you explain what the Freg is please?
Bundeenabuoy
Bundeenabuoy

NSW

1239 posts

2 Apr 2021 8:39am
Select to expand quote
Charriot said..
Beautiful very powerful HF transceiver. Typical wide band from .1 MHz to 30 MHz continues, all types of modulation.
For full power requires 20amps from bat.
Receiver is wide range but transmitter as per Aus. law is limited to marine or amateur bands. Sometimes there is the unit reprogrammed to all over.
That would be a gold. As we know HF marine is dead, apart of weather and coast guard, believe, still monitor 2182kHz.
Now , how well is receiver working, transmitter can test on short waves.


I will put some time into it and report back. Thanks for your help.
Charriot
Charriot

QLD

880 posts

2 Apr 2021 11:00am
Unit covers all HF range.
You can easily listen all radio stations on long , medium, short waves.

Longwave AM Radio = 150kHz - 280kHz (LF)
Mediumwave AM Radio = 530kHz - 1610kHz (MF)
Shortwave AM Radios =6MHz - 26MHz

Also most importantly it covers all between, range 1.6MHz to 6MHz.
MF/HF marine bands, use 2182 kHz, 4125 kHz, 6215 kHz, 8291 kHz, 12 290 kHz
Radio amateur bands 1.8MHz, 3.5MHz and others.
Very HF covers radio beacons used for marine and older aircrafts navigation, /radio bearings/
instrument used on planes, RDF radio direction finder.

select AM, no BFO, anything here AM Radio = 530kHz - 1610kHz
ignore antenna tuning, perhaps faint station brings up, but it's important
for transmitting only.

perhaps I can mention, 40 years ago I was very active on HAM waves
now ex OK1DSM
MorningBird
MorningBird

NSW

2703 posts

2 Apr 2021 7:42pm
Marine Rescue NSW have given HF away, totally. The operators in Queensland that used to provide a HF following service went by the wayside a decade or so ago. There was an NZ station, haven't heard of them for years.
I doubt you will find a marine HF station in Australia. Maybe a few ham operators.
Some global cruisers use it to keep in touch.
Unfortunately, the set is additional weight on your boat.
Jolene
Jolene

WA

1622 posts

2 Apr 2021 4:57pm
I keep my old hf radio working and maintained
Check this link out for frequency info

www.bom.gov.au/marine/radio-sat/voice-services.shtml#:~:text=Wiluna%20(VMW)%20broadcast%20schedule,-Marine%20weather%20warnings&text=high%20seas%20areas.-,The%20broadcast%20is%20available%20on%20the%20following%20frequencies%20(kHz)%3A,2056%2C%206230%2C%208113%2C%2012362
lydia
lydia

1927 posts

3 Apr 2021 8:03am
Select to expand quote
MorningBird said..
Marine Rescue NSW have given HF away, totally. The operators in Queensland that used to provide a HF following service went by the wayside a decade or so ago. There was an NZ station, haven't heard of them for years.
I doubt you will find a marine HF station in Australia. Maybe a few ham operators.
Some global cruisers use it to keep in touch.
Unfortunately, the set is additional weight on your boat.


Tas Maritime still runs HF skeds and weather for Tas and Strait.
Dover Radio ruins sleds for SouthernOcean if arranged
MorningBird
MorningBird

NSW

2703 posts

3 Apr 2021 11:23am
Select to expand quote
lydia said..

MorningBird said..
Marine Rescue NSW have given HF away, totally. The operators in Queensland that used to provide a HF following service went by the wayside a decade or so ago. There was an NZ station, haven't heard of them for years.
I doubt you will find a marine HF station in Australia. Maybe a few ham operators.
Some global cruisers use it to keep in touch.
Unfortunately, the set is additional weight on your boat.



Tas Maritime still runs HF skeds and weather for Tas and Strait.
Dover Radio ruins sleds for SouthernOcean if arranged


Thanks for the update.
saltiest1
saltiest1

NSW

2562 posts

3 Apr 2021 3:19pm
Select to expand quote
lydia said..

MorningBird said..
Marine Rescue NSW have given HF away, totally. The operators in Queensland that used to provide a HF following service went by the wayside a decade or so ago. There was an NZ station, haven't heard of them for years.
I doubt you will find a marine HF station in Australia. Maybe a few ham operators.
Some global cruisers use it to keep in touch.
Unfortunately, the set is additional weight on your boat.



Tas Maritime still runs HF skeds and weather for Tas and Strait.
Dover Radio ruins sleds for SouthernOcean if arranged


I was thinking that myself. After my vhf carked it on entry to bass strait all I had was Hf and that only received. Tas marine radio was about the only thing I picked up.
Bundeenabuoy
Bundeenabuoy

NSW

1239 posts

28 Apr 2021 5:06am
Select to expand quote
lydia said..
Do you have the Freq card.
they are group together when programmed and groups reflect usage in different parts of the world


I don't know about a Freq card. Where do they fit.
Still some progress. I have found the manual.
Just playing with the dial and switches and received a language I am guessing came from the south pacific?
Ramona
Ramona

NSW

7737 posts

28 Apr 2021 8:23am
These are the frequencies on Ramona's HF.



Serenite
Serenite

48 posts

29 Apr 2021 7:07am
In theory you should have an LROCP (Long Range Operators Certificate of Proficiency) to use an HF radio in Aust but I doubt the Spanish Inquisition would jump out and give you the comfy chair if you happened to try it out.

Marine Rescue run courses up at Terry Hills www.marinerescuensw.com.au/courses-licenses/radio-courses/ and the qualification gets issued by AMC Tassie.

I did it a few years ago and they taught us a bit about how it worked as well as what to do. Everyone's different but I thought a couple of hundred dollars well spent if you want to go offshore.

That iCOM of BundeenaBoy's can probably access the HAM frequencies so Charriot's reply above is worth a look too.

Gerald
sydchris
sydchris

NSW

387 posts

29 Apr 2021 9:18am
Select to expand quote
Bundeenabuoy said..
I have this HF radio onboard Spindrift.
If anyone has some working knowledge of it and would like to meet me at the CYCA, please send me an email.



The mods site has some useful information about changes you can make to the IC-735 including expanding the TX frequencies, and repair information if needed.

www.mods.dk/index.php?ModelId=284&RadioId=1-icom&ModelRec=ic-735
shaggybaxter
shaggybaxter

QLD

2661 posts

29 Apr 2021 10:33am
Select to expand quote
Charriot said..

For full power requires 20amps from bat.



Holy cow, I didn't know that. That's a lot of oomph.
Charriot
Charriot

QLD

880 posts

29 Apr 2021 11:59am
That's when full power transmitting.
Best Ham band to try 3.6 to 3.8 Mhz.
It would be SSB. Something fun to listen.
Otherwise from 6Mhz commercial, half of the Pacific.
Charriot
Charriot

QLD

880 posts

29 Apr 2021 11:59am
That's when full power transmitting.
Best Ham band to try 3.6 to 3.8 Mhz.
It would be SSB. Something fun to listen.
Otherwise from 6Mhz commercial, half of the Pacific.
Bundeenabuoy
Bundeenabuoy

NSW

1239 posts

29 Apr 2021 5:58pm
Select to expand quote
Charriot said..
Unit covers all HF range.
You can easily listen all radio stations on long , medium, short waves.

Longwave AM Radio = 150kHz - 280kHz (LF)
Mediumwave AM Radio = 530kHz - 1610kHz (MF)
Shortwave AM Radios =6MHz - 26MHz

Also most importantly it covers all between, range 1.6MHz to 6MHz.
MF/HF marine bands, use 2182 kHz, 4125 kHz, 6215 kHz, 8291 kHz, 12 290 kHz
Radio amateur bands 1.8MHz, 3.5MHz and others.
Very HF covers radio beacons used for marine and older aircrafts navigation, /radio bearings/
instrument used on planes, RDF radio direction finder.

select AM, no BFO, anything here AM Radio = 530kHz - 1610kHz
ignore antenna tuning, perhaps faint station brings up, but it's important
for transmitting only.

perhaps I can mention, 40 years ago I was very active on HAM waves
now ex OK1DSM

I will print this and take it to the boat.
Many thanks
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