Bezel [Escutcheon] for Racal RA117 etc.
I am restoring a Racal RA117? that came into my hands having no black Bakerlite bezel. I`m hoping that someone on this group can help me get one to make this
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Re: Racal BCC 540G AAMTU Question
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Dave,
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Many thanks for your clear and informative response. I now understand what is going on with the Syncal 2000 / VIU / 540G combination that I have.
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Also, the information regarding the other C & F variants is equally useful.
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Richard
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G7RVH
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Re: Racal BCC 540G AAMTU Question
Hi Richard
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The momentary break method does not store any data, each time it is initiated it resets the microprocessor and completes an active tune cycle with RF to match the antenna as best it can.
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When a PWM data word is sent from a suitable radio the BCC540G checks to see if it already has it in memory, if not it it completes an active tune cycle with RF to match the antenna as best it can.
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If the 8 bit PWM data word is in memory it checks the first bit which will either initiate an active tune with RF by recalling the capacitor and inductor settings stored in one of the 128 memories or indicate a passive tune (silent tune no RF) by recalling from one of the 128 memories the relay settings for capacitors and inductors.
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The memory which holds the capacitor and inductor relay settings is RAM which is held up by the battery so that information remains stored.
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When DC power is removed from the unit the relays and CPU reset so the current tune status is lost and tuning will need to be reinitiated on power on with either an active tune or passive tune described above.
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This is also the case for the BCC540C and BCC540F
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Regards
Dave g1jwg
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Re: Racal BCC 540G AAMTU Question
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Dave,
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Thanks for your response.
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Just to be clear when using the momentary break method no data is stored. Tuning data is only stored when using the PWM method. Is this data still stored when the unit has no supply e.g. when the connected radio is powered off?
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Richard
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G7RVH
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Re: Programmer MA4073C EMU
Graham,? I dont use groups.io so much, so I ask a stupid question. How can I use graham_douglas@.... ?
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Re: Racal BCC 540G AAMTU Question
There are two distinct tune modes with the BCC540G
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The first one is the standard initiate tune by momentarily breaking and restoring the DC supply on Pin C and then applying at least 1w of RF the tuning sequence will then complete or stop at the nearest point to a correct tune.
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The second method if used with a suitable radio e.g BCC39 is for the set to send a PWM serial control word to select one of 128 memory locations. This is what the battery is for to keep those memories active.
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If DC power is removed from the ATU then the current tune position is lost and on re-applying the DC supply then one to the above procedures is needed to activate the tune again.
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Hope this makes sense
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Regards
Dave g1jwg
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Hi all,
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I am contemplating purchasing a Syncal 2000 VIU to set up my Syncal 2000 in my land rover. However, there is no point in buying it if I can¡¯t acquire the rails to mount it.
If anyone has a set for sale, please let me know. I¡¯d happily pay 4X what Jeff was asking.
Thanks
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?
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73 Eugene W2HX
My Youtube Channel:?
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Re: F/S SINCAL 2000 VIU RAILS
Jeff G8XXI,? I¡¯m sending this to you through the group because I fear my direct messages are landing in spam. I am interested in one of these rails.
Thanks
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73 Eugene W2HX
My Youtube Channel:?
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toggle quoted message
Show quoted text
From: [email protected] <[email protected]>
On Behalf Of Jeff via groups.io
Sent: Sunday, November 17, 2024 5:59 AM
To: [email protected]
Subject: [RacalRadio] F/S SINCAL 2000 VIU RAILS
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HI, I have 3 sets of rails for the SYNCAL 2000 VIU config.? new old stock, IF anyone is interested ?
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Re: F/S SINCAL 2000 VIU RAILS
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Jeff,
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Message sent with my details which should be in your ntl email account according to groups.io
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Richard
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G7RVH
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Those Sherwood specs are only of very limited use in average amateur radio conditions.
If you look at professional grade receivers, these specs are useless as capabilities of a radio to deal with noise are much more important and professional receivers lack these capabilities in general.
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I am a bit confused about your callsign however,.... PE7ST.
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Re: F/S SINCAL 2000 VIU RAILS
HI Richard,
Contact me off list please. Jeff?? G8XXI
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Racal BCC 540G AAMTU Question
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The Racal BCC 540G AAMTU will store 128 channels of tuning data.
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However, notes in the technical manual that I have state that the d.c. supply is to be maintained after a tuning search and if removed this tuning information will be lost.
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What then is the purpose of the internal 3.5V lithium battery??
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Richard
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G7RVH
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Re: F/S SINCAL 2000 VIU RAILS
Jeff,
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I'd like a set please.
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My email is good on qrz.com.
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Richard
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G7RVH
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Re: Syncal 2000 receiver?
Thanks, Stuart. Very nice set up! Question, what do you have below the Syncal 2000 VIU? Looks like another device with some push buttons?
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73 Eugene W2HX
My Youtube Channel:?
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toggle quoted message
Show quoted text
From: [email protected] <[email protected]>
On Behalf Of Stuart Mckinnon via groups.io
Sent: Sunday, November 17, 2024 4:35 AM
To: [email protected]
Subject: Re: [RacalRadio] Syncal 2000 receiver?
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As a user of Racal Syncal 2000 in the 100W vehicle config, I can try to answer q's
I am no expert on Rx capability, suffice to say I find it acceptable
The VIU sits on two Long Rails, that are then secured via two bolts and Nuts and washers through the Radio Table, the rails are fairly rare, but you may get lucky
Your 28v should be no problem, I believe there is tolerance to take that voltage
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618T14012015net
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A snippet in the back of my Lightweight (Airportable) Land Rover from a few years ago
On Saturday, 16 November 2024 at 23:47:55 GMT, W2HX <w2hx@...> wrote:
Hi all,
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I have a land rover FFR outfitted with US military radios. These radios are channelized where you need to type in the frequency (Harris).
For general hamming use, this is undesirable. Instead, a VFO is more desirable.? So I was thinking of installing an receiver in the LR (one possible option is a Rohde & Schwarz EK890).
?
However, I also have a Syncal 2000 which has the VFO and would look more at home in a 1986 Defender Tithonus. I am trying to locate
a 100W base for it. Not so much for the amplification, but the 24V capability and mounting. But why not have another transmitter in the truck, of course.
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The idea would be to VFO-around the bands on the Syncal, find a spot to operate and either key up on the Racal, or type in the frequency
onto the Harris radio and go (with some antenna switching).
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Here are my questions:
-
I have not used my Syncal 2000 much at all (maybe never). How decent is the receiver on it? Good? Sub-par?
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The VIU that the RT mounts on, does it mount onto a shock mount? Is this something that is available or unobtainable?
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Can someone confirm using the VIU allows using 24V? And can the radio and amp tolerate 28VDC (my battery when fully charged). I guess the question is whether the DC-DC converter in the VIU will
tolerate 28VDC
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Thanks in advance.
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73 Eugene W2HX
My Youtube Channel:?
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F/S SINCAL 2000 VIU RAILS
HI, I have 3 sets of rails for the SYNCAL 2000 VIU config.? new old stock, IF anyone is interested ?
Asking ?25 a set.
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Jeff? G8XXI
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Re: Programmer MA4073C EMU
OK send some pictures of what you have and what you believe it to be worth and would like for it.
Our posts have been seen by others and I have had multiple offers for the EMU bits of kit I don't want or need and a cash offer.
The obvious thing to me for me to do is leave it in the 319 and it then is a complete setup with all the other bits I have.
I am willing to split it all as I believe it will make more separated and sold.
Regards Doug.
On 16/11/2024 23:38 GMT Vincent via groups.io <panserv2@...> wrote:
?
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Doug, I am in Malta Europe.
I could still do the swap. If you say you can still go ahead with it. I will send you some photos of the Racal items I have.
Thanks?
Vincent
9H5LX
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Re: Syncal 2000 receiver?
Hi Eugene
As a user of Racal Syncal 2000 in the 100W vehicle config, I can try to answer q's
I am no expert on Rx capability, suffice to say I find it acceptable
The VIU sits on two Long Rails, that are then secured via two bolts and Nuts and washers through the Radio Table, the rails are fairly rare, but you may get lucky
Your 28v should be no problem, I believe there is tolerance to take that voltage
A snippet in the back of my Lightweight (Airportable) Land Rover from a few years ago
Cheers
Stuart
Hi all,
?
I have a land rover FFR outfitted with US military radios. These radios are channelized where you need to type in the frequency (Harris). For general hamming use, this is undesirable. Instead, a VFO is more desirable.? So I was thinking
of installing an receiver in the LR (one possible option is a Rohde & Schwarz EK890).
?
However, I also have a Syncal 2000 which has the VFO and would look more at home in a 1986 Defender Tithonus. I am trying to locate a 100W base for it. Not so much for the amplification, but the 24V capability and mounting. But why not
have another transmitter in the truck, of course.
?
The idea would be to VFO-around the bands on the Syncal, find a spot to operate and either key up on the Racal, or type in the frequency onto the Harris radio and go (with some antenna switching).
?
Here are my questions:
- I have not used my Syncal 2000 much at all (maybe never). How decent is the receiver on it? Good? Sub-par?
- The VIU that the RT mounts on, does it mount onto a shock mount? Is this something that is available or unobtainable?
- Can someone confirm using the VIU allows using 24V? And can the radio and amp tolerate 28VDC (my battery when fully charged). I guess the question is whether the DC-DC converter in
the VIU will tolerate 28VDC
?
Thanks in advance.
?
73 Eugene W2HX
My Youtube Channel:?
?
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Re: Racal power unit cable 6 pin female.
Yes, I am still waiting on some front panel assemblies from him which
were ordered last year.
--scott
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Hi all,
?
I have a land rover FFR outfitted with US military radios. These radios are channelized where you need to type in the frequency (Harris). For general hamming use, this is undesirable. Instead, a VFO is more desirable.? So I was thinking
of installing an receiver in the LR (one possible option is a Rohde & Schwarz EK890).
?
However, I also have a Syncal 2000 which has the VFO and would look more at home in a 1986 Defender Tithonus. I am trying to locate a 100W base for it. Not so much for the amplification, but the 24V capability and mounting. But why not
have another transmitter in the truck, of course.
?
The idea would be to VFO-around the bands on the Syncal, find a spot to operate and either key up on the Racal, or type in the frequency onto the Harris radio and go (with some antenna switching).
?
Here are my questions:
- I have not used my Syncal 2000 much at all (maybe never). How decent is the receiver on it? Good? Sub-par?
- The VIU that the RT mounts on, does it mount onto a shock mount? Is this something that is available or unobtainable?
- Can someone confirm using the VIU allows using 24V? And can the radio and amp tolerate 28VDC (my battery when fully charged). I guess the question is whether the DC-DC converter in
the VIU will tolerate 28VDC
?
Thanks in advance.
?
73 Eugene W2HX
My Youtube Channel:?
?
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Richard G7RVH