[MRCA] GRR-5 Receiver Filament Vibrator E102 Needed

[B. Smith]

         I guess my questions are:
1.  What is the frequency of the replacement?  The GRR-5 E-102 vibrataor 
operates at 100 cycles.

2. Will the replacement  handle the high voltage  of 140 volts on the 
GRR-5 filament supply? According to the power supply filament regulator 
schematic the E-102 vibrator switches 143 volts to transformer T-3. I am 
beginning to not be very fond of the GRR-5 power supply.

3. Will you have a version for switching a positive potential. Such as 
used on the PE-104 vibrator supply for the BC-654?

k4che

On 4/19/2016 10:51 AM, dnmais at aol.com wrote:
> I have a GRR-5 and know it is difficult to find these items. The 
> following may be of interest to your friend.
>
> /Hello everyone,/
> //
> //
> //
> /To further our group project of selling solid-state vibrator 
> replacements to everyone at cost price, I am pleased to inform 
> everyone that we can now provide a complete ready made 4 pin 
> sold-state vibrator in 6 volts, 12 volts and 24 volts./
> //
> //
> //
> /These new ready made solid-state vibrator replacements will all work 
> on negative ground equipment. They are a direct plug in replacement 
> for the old mechanical vibrators and will out perform the old 
> mechanical vibrators in many ways. They have the same 4 pin plug on 
> the bottom as the old mechanical vibrators have, so they will just 
> plug in and replace the old mechanical vibrator with no modifications 
> to the radio/equipment./
> //
> //
> //
> /Here are just some reasons for using the solid-state vibrator 
> replacements;/
> //
> //
> //
> /1. No mechanical buzzing any more. This is great news for R209 users 
> where the mechanical vibrations have been known to modulate the BFO 
> causing a poor CW note and difficulty in tuning in SSB./
> //
> //
> //
> /2. No interference anymore from the sparks across the vibrator 
> contacts. These new vibrators are all solid-state, no sparks = no 
> interference from the vibrator!/
> //
> //
> //
> /3. The contact resistance of the old mechanical vibrators can 
> be considerably higher than the solid-state vibrator replacements, the 
> solid-state vibrator replacements have an on resistance of under 0.008 
> ohms, that's *_less_* than 8 milli ohms./
> //
> //
> //
> /4. Due to the much lower on resistance of the solid-state vibrator 
> replacements, the HT regulation can be much improved. The HT voltage 
> will dip much less when using a solid-state vibrator replacements than 
> it will using an old mechanical vibrator who's contacts may have a 
> much higher resistance than 0.008 ohms./
> //
> //
> //
> /5. If you wish to use your solid-state vibrator to replace an 
> original heavy duty mechanical vibrator, let me know when you order 
> and I will increase the current handling of the PCB to cope with the 
> higher current load. As standard the FETs used will handle 110 amps, 
> so I very much doubt if any equipment will come even close to that 
> kind of load!/
> //
> //
> //
> /The completely finished, ready to plug in and use, solid-state 
> vibrators will cost only *GBP 29.99* plus postage to anywhere in the 
> world./
> //
> //
> //
> /For the first 12 months, if it fails I'll repair it FOC. If you blow 
> it up any time within the first 12 months, I'll repair it for the cost 
> of postage. If you blow it up after 12 months, I'll repair it for the 
> cost of parts and postage. (Provided you haven't completely melted the 
> outer case or the 4 pin plug on the bottom and the case is still 
> sealed closed!) BTW, top and bottom are black plastic, but the outer 
> case is aluminium./
> //
> //
> //
> /http://www.royalsignals.org.uk/vibs/new-SS-Vib.jpg
>
> For further details and orders, contact 
> Wireless-Set-No19-Owner at YahooGroups.com 
> <mailto:Wireless-Set-No19-Owner at YahooGroups.com>/
>
> Regards,
>
> David KB1EXN
>
>
> -----Original Message-----
> From: B. Smith <smithab11 at comcast.net>
> To: Milsurplus <milsurplus at mailman.qth.net>; mrca <mrca at mailman.qth.net>
> Sent: Sun, Apr 17, 2016 3:54 pm
> Subject: [MRCA] GRR-5 Receiver Filament Vibrator E102 Needed
>
> A friend of mine needs E102 the filament voltage vibrator for the
> GRR-5 receiver. Anyone have a spare?
> Breck k4che
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