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Re: I have a working ma 988 racal loudspeaker
Sorry, Jimmy, I should have noted that you'd said 50
ohms. Any ideas, anyone? You've given us a new Racal model number, thouh. Anyone know what the MA4988 is for? Bob --- repairmantoo <repairmantoo@...> wrote: the problem I have been having is finding a 50 ohm __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around |
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Re: I have a working ma 988 racal loudspeaker
repairmantoo
the problem I have been having is finding a 50 ohm speaker here in
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the US , I have look all over the place . I will try to upload the speaker plans to this web site later , I have a MA-4988 speaker and I have no ideal what that fits , The audio plug looks like my plug but it willnt fit and the pin wiring is really strange too , it pull over 2 amp which is too much for the prm 4031. the ma 988 has a pull of just .2 amp just right for the battery pack and when I use the PTT the audio is shutoff so there is no feedback, by using a grounded pin on the audio that has power 8.50 volts until the PTT is used and is grounded to a zero voltage state--- In Racal- manpacks@..., Bob Sayers <bobsayers2000@y...> wrote: Hi, Jimmy, |
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Re: I have a working ma 988 racal loudspeaker
Hi, Jimmy,
Glad to hear that you're having some success! What are the details of that speaker? Presumably they have waterproof mylar cones? Here in the UK, Maplin Electronics list a number of speakers with mylar cones in various sizes, all (from memory) with square frames and a fixing hole in each corner. regards, Bob --- repairmantoo <repairmantoo@...> wrote: I have a working ma 988 racal loudspeaker I use it __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. |
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prm 4031 racal service book
repairmantoo
I have a racal prm 4031 service book on arobat reader , it took me a
long time many many nights to copy this and place it into a arobat file over 300 pages with wiring diagrams, If I could find a place to upload this I would like to let anyone have it for free, now you cant beat that deal, but just keep me in mind if anyone who downloads this likes it a little money is fine but it is not really that important if they have money problems and need the book, email only armygear@... |
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I have a working ma 988 racal loudspeaker
repairmantoo
I have a working ma 988 racal loudspeaker I use it on my prm 4031
works great, I need a extra one for spare parts mostly for a 2nd one I am working on .I need the 50 ohm speaker mostly, please reply if you have one. I have the board and wiring on paper if anyone need this for a project , could save some time as I never could find a wiring diagram of the ma 988. just gave up after months of looking and with replys from people wanting fees for looking for something they didnt have got to be a really bad nightmare so I made my own diagram of the ma 988 speaker. Seem like there are a lot of people out there making money and over charging us in our hobby, any contacts please use armygear@... thanks jimmy |
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Re: New group members
Thanks, Howard, I think I may change to it those
settings for a while, as it obviously encourages new members by them feeling they can join immediately, but on the other hand most postings to the group would be unlikely to be "urgent", and so wouldn't cause offence if there was a slight delay in them appearing. best regards, Bob --- Howard Small <howard@...> wrote: Hi Bob, __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. |
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New member
spectreman51
Hi Bob and the group.
My name is Chris Lumsden & I live in Sydney, Australia. I have been collecting military radios for several years. The Racal sets I have are the BCC39B, PRC-349, PRM-4720, Jaguar V variant, and two MEROD terminals. I like the Racal gear very much. Well built & work very well. The other UK set I have is the MEL PRC-319 HF manpack. Bob, sorry but I dont wish to sell one of my MEROD terminals. The whole point of me having two is to use them together. I do have my ham license, so yes we could try having a MEROD contact on HF. That would be fun ! I will also be soon getting a Plessey terminal, the same as you have. Does the terminal transmit standard ASCII ? It says this in the Janes book I have. I hope it does ! Cheers, Chris VK3ZDX |
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Re: New group members
Hi Bob,
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Thanks for the group. An alternative is to allow anyone to join (automated applications are prevented by the yahoo procedure requiring a graphic to be read and entered as text) but require posts to be moderated. After a members first (or whatever) post you change their settings to allow unmoderated posting. I use that procedure on clansman/larkspur group and it seems to solve the spam problem. Howard, VK3DLH I think you'll all agree that it's worth keeping the membership |
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New group members
Hi to all those of you who have just joined this group!
To all of you, I've just noticed that any of the optional "comments" which you made when you applied to join the group aren't automatically forwarded as a message when your application is approved. Quite a few of your comments are very relevant (specific interests, items that you are looking for, etc) so please feel free to re-send these to the group as a normal message. I think you'll all agree that it's worth keeping the membership approval system in place. It isn't a certian guarantee against spamming, but at least it stops those individuals who join groups and then immediately start spamming. At present, I can normally approve applications within a matter of hours. best regards, bob |
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photos of Racal manpacks
John Cook
Hi Folks,
Living in the US, we don't see many racal manpacks, I'm proud to own and operate daily a BCC-39B but I'm still learning about many racal Radios that I have not had a chance to see. Some of them have very little on the internet about them.I would appreciate it very much if some of you would post photos to the group photo album of your radios so I could see what they look like. Cheers, John K6ERO |
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Re: New Member and also a cry for help.
John Cook
Hi Stijn,
I also have a BCC-39B, I really like the radio, excellent reciever ,it sure puts out a good clean signal,I'm am going to buy the VRQ-319 vehicular adapter from Mike at Combat radio soon to install in my M151A2 jeep,or I might buy a Series III Landrover a friend has for sale just to put radios in :-) I had a long chat with Mike at CR today, he has been searching for some time for the complete manual set for the BCC-39B and has as yet had no luck.He has several VRQ-319 sets without the transceiver but no ATU's for them. I am also looking for the ATU. I have found out very little about the BCC-39, no history or when and where they were fielded in service.I heard a story that a group of the first BCC-39 went to US special forces,and were used for drug interdiction ops in South America, but that hear say, Do you or anyone else in the group have any more history on the rig? I'll be sure to let you know if I see a control panel or ATU for sale. and its sure puts out a good clean signal Cheers, John Cook K6ERO Favetteville Arkansas. www.muttmotorpool.com --- In Racal-manpacks@..., "Stijn" <s.nestra@h...> wrote: ofThe BCC39B is my favourite fieldday station, lightweigt and lots power.full service and operating manual (especially the chapter about theand two sets.happy!
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New Member and also a cry for help.
Stijn
Hi there,
I'm a Racal enthousiast from Holland, I have 2 times the BCC39B one as a vehicular set and one as manpack. I also have some not so portable Racal items, a TTA1870 transmitter with remote control (comes in handy because the cooling fan's make an awfull lot of nois! e) and two RA1784 receivers wich I can control from 4 places in the house with some MA1072 Control panels plus some loose bits & pieces. The BCC39B is my favourite fieldday station, lightweigt and lots of power. And now for the question: With the BCC39B I've got the schematics, but I'm looking for a full service and operating manual (especially the chapter about the control panel and it's communication protocol). I'm also looking for a control panel, since I have only one panel and two sets. And last but not least I'm looking for the vehicular antenna tuner, type: H.F.Vehicle ATU ATU 3912 49815-100-00-01 If anyone can help me with some of these items, I would be very happy! Thank's for reading and 73 from Stijn PE1RKS |
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Manpack remote control units
Hi, all,
Does anyone have either or both of the MA4985A Local Control Unit, or the MA4985A Remote Control Unit, which they might like to part with, or exchange for the MA985 and MA986 equivalents which are normally used with the TRA931? My only reason for wanting to swap is that the carrying frame for my manpacks actually has a position to mount the MA4985. best regards, Bob |
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Mystery Racal item
Hi, All,
Do any of you have any informationa about an HF RF amplifier which is in the same case style as the PRM series manpacks? I've just come across some more information for my own 4041 manpack, and which shows some manpack installations in the back of a Range Rover. One picture shows a stack of three units in the same size and style of case as the PRM series. One is a PRM4041 without AATU (and a further picture actually shows the AATU bolted onto the inside of the C-pillar of the RR, with a very short lead to a standard Racal military vehicle antenna base on the rear of the roof). A further item is an MA4019, which I know is a filter used for co-sited multi- radio installations. However, the third unit is not referred to, but appears to have a very "busy" front panel with lots of indicator lights and switches, similar to the TA970H VHF Amplifier but a wider front panel. Two 7- pin sockets are on the left hand side, and in the picture both are connected to the 4041. The caption refers to the photograph as a "High Power Vehicle Station using MA4019 Filter Units". (In fact the photograph actually has TWO identical stacks of the three units, which suggests that this Range Rover must be carrying a good proportion of the total production of PRM.4041s!). The accompanying text only refers to the TA.4044 HF Amplifier (no suffix) which I thought was in the much larger diecast case style, similar in size to the TRA931 transceiver? Any information, anyone? best regards, Bob |
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Re: Strange Racal set
Hmm, afraid my information is pretty sketchy, Alan. The "Concise
Catalogue" has a picture, but just says " TA970H, 25 watts, 14-32 volts, for use with TRA967"! Bob --- In Racal-manpacks@..., Alan Tasker <atasker@i...> wrote: with 12 Volts.Actually, according to the Racal spec, the TA970H can have a supplyActually, I think there is a regulator inside to supply the 967
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Re: Strange Racal set
Alan Tasker
Actually, according to the Racal spec, the TA970H can have a supply Actually, I think there is a regulator inside to supply the 967 with 12 Volts. Where do I find specs on the 970? Thank you. Alan |
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Racal manpack on air 6th June
Hi, All,
All being well, I should be on the air tomorrow, 6th June, with an all-green-Racal station consisting of a the PRM.4041 manpack, MA654 tactical dipole, or the MA961 Tactical Loop. I'm rushing to finish a connection cable between the manpack and it's AATU, which I hope to finish, otherwise I may have to cheat on this occasion and use my SGC Portatuner. I'll be very pleased to work any of you, of course! best regards, Bob, G8IYK |
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Re: Strange Racal set
Very interesting - nothing in any of my information about an
assembly like that, Alan. Those battery dimensions fit the MA934 battery exactly, both in external dimensions and for the fixing bolts. Normally of course these are 24 volt (for the TRA931, etc), but I suppose Racal could have easily used the same case and configured the cells inside differently. Might be worth a call to one of the suppliers who still list Racal manpack batteries, and see if they know of a 12 volt battery in this pack? Actually, according to the Racal spec, the TA970H can have a supply voltage between 14 and 32 volts - does it contain a regulator to supply 12 volts to the '967? If so, that suggests they may be using the standard 934 battery. These have turned up on eBay in the last few months, so they are around. According to my information, the MA934 is one of the few batteries from this generation of manpacks that is only available asa rechargable, and doesn't have a dry cell equivalent. best regards, Bob --- In Racal-manpacks@..., Alan Tasker <atasker@i...> wrote: I have a tubular frame that mounts a TRA-967 transceiver, a TRA-970power amp, an MA-972B ATU, a small junction box, and a (missing) batterybox. The battery box would be about 13.5" long by 3.25" wide by about 4.5"deep. The box would have two mounting screws about 9.25" apart. |
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2 + 2 = 5?
Alan Tasker
The information that in some of the HF rigs, a voltage on the RF output line is used by the ATU brought to mind that the Racal TRA-967 VHF rig has a voltage on its RF output BNC connector, which I had thought was strange. I looked into it further, and found that the voltage was dependent upon frequency setting as follows (measured with no load on the BNC connector).
30-43,975 MHz, 0 Volts 44-59.975 MHz, ~half battery voltage 60 and up, battery voltage I wondered if this was used for tuning, so I powered up the funny Racal backpack set (the one that has a TRA-967 plus a PA box and an ATU box), and listened carefully. There are definite sounds of relays clicking inside the ATU as the frequency is changed. Measurements show that the 967 voltage output does pass through the PA box unscathed, so we now know why this voltage exists. |
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