SD radars, Radio Antenna & Loop Antenna ...

[Anvart]

Hi, all.
In game we have next Air Radars:
1) SD Radar (Early);
2) Improved SD Radar (Late);
3) SV Radar (AdvAirRadars).
For 1 and 2 radars, models are known and clear:

http://img80.imageshack.us/img80/2497/sdantena1tg5.jpg
http://img80.imageshack.us/img80/3687/sdantennauz7.jpg

For 3 radar, i have found (in Sensors_sub_US.dat) only this suitable model, but it is called NSS_SS (_Head):

http://img167.imageshack.us/img167/2175/nssssheadft6.jpg

Is it correct?
I wish to know your opinion ...

P.S.
Ok. I am right ... It's right model for SV Radar ...
I have found SVRadar as UpgradePack in NSS_Balao.ups, NSS_Gato.ups, Equipment.ups and UpgradePacks.ups ...
And i have found NSS_SS (it's parent object for NSS_SS_Head) in NSS_Balao.sns and NSS_Gato.sns as cfg#R02... node (Air Radar)
and in Equipment.ups ...

Next ...

In game we have Radio Antenna (equipment).
This device is not functionally (does not work) ...
In Sensors_sub_US.dat i have found suitable model, but it is called NSS_IFF_01 (02). IFF it's Identification Friend or Foe, i think ... For example it's in Tambor CT as cfg#R03 ... I have found it (NSS_IFF_01) in Tambor, Gar and Gato ***.sns as cfg#R03 ...
I have found NSS_IFF_02 in NSS_Balao.sns ...

http://img167.imageshack.us/img167/4292/nssiffpw7.jpg

Is it correct?
And ...
If to make this antenna (NSS_IFF_01) rotating synchronously with SJ radar antenna (eye-candy), it will be correct or not?

And more ...
In Sensors_sub_US.dat i have found model of Loop Antenna.
This device is not functionally (does not work) too ...
And it is not used anywhere (i think)...???

P.S. I have found it in Porpoise, Sargo and Salmon ***.sns as cfg#R03 ...



http://img167.imageshack.us/img167/1155/loopantennabe9.jpg

What do you think about it?
For what purposes these devices are in game?

[jdkbph]

I know I've seen that loop antenna before... it shows up on one or more of the older fleet boats (Porpoise, Salmon, etc) when you upgrade to the mid-war tower.

That other antenna that's identified as IFF is actually a Radio Direction Finder I believe. IFF is just a transponder.

JD

[Anvart]

I know I've seen that loop antenna before... it shows up on one or more of the older fleet boats (Porpoise, Salmon, etc) when you upgrade to the mid-war tower.

That other antenna that's identified as IFF is actually a Radio Direction Finder I believe. IFF is just a transponder.

JD
Yes, OK.
I have found Loop Antenna in Porpoise, Sargo and Salmon ***.sns as cfg#R03 ...

[AVGWarhawk]

Anvart, take a look at the observation scope. Mine barely extends over the surface of the water. I run RFB/ROW. Not sure if these are the cause.

[Anvart]

Anvart, take a look at the observation scope. Mine barely extends over the surface of the water. I run RFB/ROW. Not sure if these are the cause.
You about SD UpDown?

[AVGWarhawk]

Anvart, take a look at the observation scope. Mine barely extends over the surface of the water. I run RFB/ROW. Not sure if these are the cause.
You about SD UpDown?

Not the radars. The second periscope or observation scope does not go above the water line. It does not extend far enough.

[Anvart]

Anvart, take a look at the observation scope. Mine barely extends over the surface of the water. I run RFB/ROW. Not sure if these are the cause.
You about SD UpDown?

Not the radars. The second periscope or observation scope does not go above the water line. It does not extend far enough.

Sorry,
I do not understand about what you speak, at me in game (stock game with my mods) Obs peri's are OK for all sub's ... :o
Have you peri depth? And for what sub and conning you have this glitch?
If this glitch is only for concrete conningT that it's necessary to change coordinates (Y) of cfg#O03... node in Conning ***.dat ...
If this effect is for ObsPeri's of all sub's there can be mistake in Sensors_sub_US.sim (*.dat) file ... or bad position ObsPeri Camera (may be in Cameras.dat) ...

P.S.
Look Free Camera (F12), ObsPeri is a little above AttackPeri ...

[Anvart]

OK.
I have answered some questions itself (see the green text) ...
One question has remained, for what purposes we have in game IFF and Loop antennas ...?
And about rotation ...

[donut]

http://img167.imageshack.us/img167/2175/nssssheadft6.jpg
Would be nice if you could get surface search to work on SD up-down mast.
SJ @ P/D,would be the cats meow,although it may be only late war historicaly correct

[Anvart]

http://img167.imageshack.us/img167/2175/nssssheadft6.jpg
Would be nice if you could get surface search to work on SD up-down mast.
SJ @ P/D,would be the cats meow,although it may be only late war historicaly correct
No, It's SV Radar Antenna (AdvAirRadar)... Look 1 post green text ... for Balao, Gato sub's from the middle 1945 ...

[donut]

Advart P.S.
Ok. I am right ... It's right model for SV Radar ...
I have found SVRadar as UpgradePack in NSS_Balao.ups, NSS_Gato.ups, Equipment.ups and UpgradePacks.ups ...
And i have found NSS_SS (it's parent object for NSS_SS_Head) in NSS_Balao.sns and NSS_Gato.sns as cfg#R02... node (Air Radar)
and in Equipment.ups ...
http://img392.imageshack.us/img392/5364/uscgcutterspencersk0.jpg (http://www.subsim.com/radioroom/)
Looked the same:oops: as on my ship. But you are correct.

[LukeFF]

No, It's SV Radar Antenna (AdvAirRadar)... Look 1 post green text ... for Balao, Gato sub's from the middle 1945 ...

Actually, unlike SD radar, SV radar could pick up surface contacts:



SV, SV-a, SV-1 SEARCH RADAR (http://www.maritime.org/radio-sv.htm)


Maximum reliable range. (miles):
Bombers, at 30,000 ft 7.5
Bombers, at 10,000 ft 10
Fighters, at 10,000 ft 12
Battleships 12.5
Cruisers 15
Destroyers 10
Submarines, surfaced 7.5

[Anvart]

No, It's SV Radar Antenna (AdvAirRadar)... Look 1 post green text ... for Balao, Gato sub's from the middle 1945 ...

Actually, unlike SD radar, SV radar could pick up surface contacts:



SV, SV-a, SV-1 SEARCH RADAR (http://www.maritime.org/radio-sv.htm)


Maximum reliable range. (miles):
Bombers, at 30,000 ft 7.5
Bombers, at 10,000 ft 10
Fighters, at 10,000 ft 12
Battleships 12.5
Cruisers 15
Destroyers 10
Submarines, surfaced 7.5
In game:
Late SD:
PreciseRange = 23000 m;
MaxRange = 111120;
MinHeight = 80;
MaxHeight = 5000;
ElevationMin = 359°;
ElevationMax = 90.

SV radar:
PreciseRange = 23000 m;
MaxRange = 12000;
MinHeight = 6;
MaxHeight = 2500;
ElevationMin = 359°;
ElevationMax = 60.

[elanaiba]

Anvart, you are correct, that is the SV radar antenna. It is similar but significantly larger than the late war SJ-1 antenna.

The object names are not always correct ;) but those are not supposed to be seen by the public. The confusion is based on a wrongly labeled drawing in a book.

The actual SS antenna is relatively small and looks "identical" to the early - non slotted - SJ radar antenna. Not modelled but I guess you could make a "clone". The SS appeared after the war so it was not one of our targets.

The rest of the devices mentioned are just there to help recreate the look of US submarines going through wartimes changes.

[LukeFF]

Im game:
Late SD:
PreciseRange = 23000 m;
MaxRange = 111120;
MinHeight = 80;
MaxHeight = 5000;
ElevationMin = 359°;
ElevationMax = 90.

SV radar:
PreciseRange = 23000 m;
MaxRange = 12000;
MinHeight = 6;
MaxHeight = 2500;
ElevationMin = 359°;
ElevationMax = 60.

Yes, but those are stock values, and they are way off the mark. RFB fixes that. ;)

[Anvart]

Im game:
Late SD:
PreciseRange = 23000 m;
MaxRange = 111120;
MinHeight = 80;
MaxHeight = 5000;
ElevationMin = 359°;
ElevationMax = 90.

SV radar:
PreciseRange = 23000 m;
MaxRange = 12000;
MinHeight = 6;
MaxHeight = 2500;
ElevationMin = 359°;
ElevationMax = 60.

Yes, but those are stock values, and they are way off the mark. RFB fixes that. ;)
:D
Do not forget it's 1.4 version ...

[Anvart]

Anvart, you are correct, that is the SV radar antenna. It is similar but significantly larger than the late war SJ-1 antenna.

The object names are not always correct ;) but those are not supposed to be seen by the public. The confusion is based on a wrongly labeled drawing in a book.

The actual SS antenna is relatively small and looks "identical" to the early - non slotted - SJ radar antenna. Not modelled but I guess you could make a "clone". The SS appeared after the war so it was not one of our targets.

The rest of the devices mentioned are just there to help recreate the look of US submarines going through wartimes changes.
Thanks, Elanaiba.

[Anvart]

Hi, All.
Some people asked to me questions about SV Radar Antenna, and ...
I have inserted Balao sub with date later than 8/30/1945 into my test (single) mission ...
And certainly this submarine has been equipped by SV Radar Antenna ...
That at testing there were no hindrances from other devices I has made SV radar antenna mast rising also as SD radar antenna ...
But on periscopic depth SV antenna head rose above water on height insufficient for work of SV radar, therefore I have changed max_height parameter of obj_Extensible controller from 5 meters to 6 meters ...
Look that we have ...

Balao sub under water:

http://img221.imageshack.us/img221/4136/svunderwam8.jpg

SV radar antenna is raised. We see messages "Radar contact ...":

http://img221.imageshack.us/img221/3092/svraisepk3.jpg

And on the map we see not only airplanes, but also the ships !!!

http://img221.imageshack.us/img221/7417/svmaprk4.jpg

All very well, and I think may be it's necessary make raising/lowering for SV radar antenna too ...???

But there is also unpleasant moment... SV antenna head rotates all time and under water too ... :rotfl:

[LukeFF]

Was raising the SV radar antenna a valid (aka, historically correct) procedure?

[lurker_hlb3]

Was raising the SV radar antenna a valid (aka, historically correct) procedure?

A picture is worth a 1000 words

http://www.maritime.org/radio-sv.htm

[elanaiba]

Anvart, what is the "MinSensorHeight" Value set in SensorData?

[The General]

Anvart this is fantastic work! Is this available as a downloadable Mod yet?

[Anvart]

Was raising the SV radar antenna a valid (aka, historically correct) procedure?

A picture is worth a 1000 words

http://www.maritime.org/radio-sv.htm
lurker_hlb3, :up: :up: :up:

[Anvart]

Anvart, what is the "MinSensorHeight" Value set in SensorData?
You about increase max_height in obj_Extensible? :D
I understand you, but I did not begin to change this characteristic (MinSensorHeight) of SV radar (while) ... May be it's RL characteristic ... I don't know ...
SensorData param's for stock NSS_SS_Head:
MaxRange = 12000;
MinHeight = 6;
MaxHeight = 2500;
MinSensorHeight = 2; ;) !!!
MaxSensorHeight = 20000;
SweepPeriod = 1; !
ElevationMin = 359°;
ElevationMax = 60°.

[Anvart]

Anvart this is fantastic work! Is this available as a downloadable Mod yet?
While it's the answer to questions of forum readers only ... and certainly it's in my test swimming pool. :D

[M. Sarsfield]

The loop is definitely a DF (direction finding) antenna. Onboard the USS Batfish (museum) there are about three APR-1 electronic boxes located in the command room, which are the DF receivers. Next to those boxes is also an A-scope for the SD radar.

[Anvart]

The loop is definitely a DF (direction finding) antenna. Onboard the USS Batfish (museum) there are about three APR-1 electronic boxes located in the command room, which are the DF receivers. Next to those boxes is also an A-scope for the SD radar.
Thanks, M. Sarsfield. :up:

[skwasjer]

Cool stuff, Anvart :up:

[M. Sarsfield]

Thanks, M. Sarsfield. :up:

My pleasure. Just to be clear, when I said "loop", I was referring to the small loop antenna labeled as "IFF" in the game. The antenna could be rotated to fix the location of a radio/radar transmitting source.

The large loop was just one of several antennas for the radios.

Here's a link to what an APR-1 unit looks like. It was used with other AN/APA equipment, depending upon the application.

http://www.radiomilitari.com/apr1.html

[Anvart]

Thanks, M. Sarsfield. :up:

My pleasure. Just to be clear, when I said "loop", I was referring to the small loop antenna labeled as "IFF" in the game. The antenna could be rotated to fix the location of a radio/radar transmitting source.

Here's a link to what an APR-1 unit looks like. It was used with other AN/APA equipment, depending upon the application.

http://www.radiomilitari.com/apr1.html
OK. :up:
One more plus in favour of NSS_IFF_01 rotation!?
You wish to tell, that IFF systems were absent on US submarines during IIWW...???
And more ...
Position NSS_IFF_02 antenna on Balao sub (in game) does not allow it to rotate ... Look first pic in #18 post ...

[Anvart]

Cool stuff, Anvart :up:
Thanks, Skwasjer. :sunny:

[M. Sarsfield]

The antenna was manually rotated by the radio operator much like the sound operator rotates the two sound heads. It would not continually spin like a radar antenna.

I don't think IFF existed back then. They relied on radio calls with the code words of the day for identification. They think that the USS Seawolf was possibly sunk by US aircraft/destroyers, because supposedly it did not give the correct response to the destroyer's (USS Rowell) ID call.

[Anvart]

1) The antenna was manually rotated by the radio operator much like the sound operator rotates the two sound heads. It would not continually spin like a radar antenna.

2) I don't think IFF existed back then. They relied on radio calls with the code words of the day for identification. They think that the USS Seawolf was possibly sunk by US aircraft/destroyers, because supposedly it did not give the correct response to the destroyer's (USS Rowell) ID call.
1) For full circular survey DF antenna should turn on 180° (or slightly less)... ??? ... , but on pic (#18) it's impossible ..
2) http://www.hnsa.org/doc/radar/part2.htm
http://www.hnsa.org/doc/radar/part4.htm#pgSJ-1

....
and:
http://world.guns.ru/machine/mg07-r.htm
Joke ... :D

[M. Sarsfield]

I stand corrected on the IFF. I learn something new every day. When I go to the Batfish this Saturday, I'll keep an eye out for the IFF boxes in the con.

[LukeFF]

Was raising the SV radar antenna a valid (aka, historically correct) procedure?
A picture is worth a 1000 words

http://www.maritime.org/radio-sv.htm
Considing how many times I've been to that page, I should have known that... :roll:

Thanks!