Hello, I've just bought a 770R for restoration which seems to be in reasonable condition except for two fairly big problems. The flywheel friction drive to the...
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GRAEME WORMALD
graemewormald
Feb 7, 2007 5:45 pm
Hello Keith. The drive cord lacing is described in the handbook. The friction drive is considered to be a factory servicing job and isn't described. The only...
130
harv54
Feb 7, 2007 7:52 pm
Thanks for that information. Lokking at the drive cable layout, it seems that I'm also lacking the two pulley gears so I'll probably need a scrapper Cheers ...
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Gerry O'Hara
g8guh
Feb 8, 2007 5:28 am
Hi Keith, Check out my S770R restoration article on the EUG site as well as some of the other restoration articles, which include several photos of Eddystone ...
132
g0eyo
Feb 10, 2007 2:21 pm
The EUG website is in the process of uploading the service manual for the IMR54 receiver. However the circuit we are working from is rather poor and difficult...
133
GRAEME WORMALD
graemewormald
Feb 10, 2007 5:00 pm
hello Chris, it's possible that Ted may have one. He's holidaying in the I.o.M. (Brrrr) at the moment. I'll enquire when he returns. Graeme. ... From: g0eyo...
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g8dlh
Feb 11, 2007 2:15 pm
EC10 Mk. II seems rather insensitive on all bands: any suggestions, please? A circuit diagram would also help: and suggestions, please? Al / G8DLH...
135
Alan Ainslie
alan_ainslie
Feb 11, 2007 3:55 pm
EC10 Mk2 service info is available for download on the excellent EUG web site http://www.eddystoneusergroup.org.uk/ Alan ... From: g8dlh To:...
136
GRAEME WORMALD
graemewormald
Feb 11, 2007 5:32 pm
Hello Al / G8DLH, Assuming that the IF is properly aligned, the most likely problem will lie with one of the OC71 transistors. These have now become very...
137
Gerry O'Hara
g8guh
Feb 11, 2007 6:03 pm
Al, I think Graeme means the OC171 transistors in the RF and IF stages (the OC71 is in the AF stage). The OC171's have four leads, one of which is an earth ...
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g8dlh
Feb 11, 2007 6:38 pm
... (the OC71 ... an earth ... that ... of the ... GRAEME WORMALD ... will lie ... (ie ... which can ... Determine which ... then ... believe 'new' ... ...
139
GRAEME WORMALD
graemewormald
Feb 11, 2007 7:51 pm
Yes, you're quite right; I never could count! Graeme. ... From: Gerry O'Hara To: eddystone_radio_users@... Sent: Sunday, February 11, 2007 6:03...
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ta2lj
Feb 14, 2007 12:06 pm
Hi All, I found one Eddystone 5500 in a surplus shop. I made a search in Google for the technical manual but I found nothing. Since this transceiver Xtal...
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g0eyo
Feb 14, 2007 6:13 pm
Hakan I think you might mean Orion 5000, 6 channel 100W transceiver. You can view data sheet in our website www.eddystoneusergroup.org.uk in Data sheet...
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GRAEME WORMALD
graemewormald
Feb 14, 2007 6:32 pm
Hello Chris, been looking at this one; the 5500 is the military version (shown in QRG). I think it was trialled by NATO but not adopted. There is a big NATO...
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g8dlh
Feb 14, 2007 9:54 pm
To: Alan Ainslie. Thanks for that. From the EUG Web Site I was indeed able to get a copy of the Service Manual for the EC10 - including the supplement for the...
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alan_ainslie
Feb 14, 2007 10:01 pm
If you send me your email address then I will post you a cct. Maybe I better scan a copy of the cct for the web site. Alan. ... Service ... EUG ... ...
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g0eyo
Feb 15, 2007 1:53 pm
Graeme It could be the 5500 but we sold so few of those and only to Ghana military. We certainly never had it trialled by NATO it was styled just to give a...
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g0eyo
Feb 15, 2007 1:58 pm
Had not realised that the circuit of the EC10 Mk2 was missing the left hand bit. We now have better copy of the EC10Mk2 manual available to put on the web site...
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g8dlh
Feb 15, 2007 10:46 pm
Hi all! EC10 Mk. II. Tuning cord broke whilst other repairs were being undertaken! The manual (from the EUG Web Site) describes the re- stringing procedure for...
148
GRAEME WORMALD
graemewormald
Feb 15, 2007 11:33 pm
Hello Al, I've repaired drive cords on EC10 Mks I & II (not at the same time!) and haven't been aware of a difference. As I no longer have either I'm afraid I...
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g8dlh
Feb 16, 2007 12:28 am
Hi Graeme - Yes . . . Drive cord trouble . . "Apply the ol' grey cells". There speaks the Voice of Experience. So I did - and fixed it! When I studied the...
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g8dlh
Feb 16, 2007 1:36 am
I KNOW this sounds awfully bland, but was not the 730/4 particularly designed to a rather exacting spec. issued by the M.O.D.? If that spec. specifically...
151
GRAEME WORMALD
graemewormald
Feb 16, 2007 10:08 pm
Hello Al/Chris, The 730 series was an Eddystone private venture which was adopted by the MoD. It had to be beefed up a little from a mechanical point of view...
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g8dlh
Feb 16, 2007 10:21 pm
Graeme - Thanks for that. I'm always fascinated by the history of individual Eddystone designs, and that has helped fill another gap! Al / G8DLH ... by the...
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superconjacko
Feb 17, 2007 11:19 pm
Gentlemen, Recently acting as a distance learning apprentice to Gerry O'Hara in Vancouver I made a succesfull full RF, IF and discriminator alignment of my...
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Nick Pettefar
pettefar
Feb 18, 2007 5:27 am
Hi, any pointers on how to get an 840C out of its case? I've removed the four rear screws but nothing has become free or even looser. Do I need a hammer and...
155
Gerry O'Hara
g8guh
Feb 18, 2007 7:41 am
Hello Nick, The 'official' method for recalcitrant Eddystone cases is to place the receiver face down on its handles and smartly 'slap' both ends of the case ...
156
GRAEME WORMALD
graemewormald
Feb 18, 2007 10:37 am
Hello Nick, The Really Official way is this: turn the set upside-down (resting on a blanket or similar pad). A couple of inches or so from each end will be...
157
James Turner
jimbo352000
Feb 18, 2007 4:21 pm
I have decided to sell my working, unmodified, good condition 940. Willing to deliver within a radius of 50 miles from Holmfirth in West Yorkshire...
