Hi Tom - Any idea on how many 725's were produced and when? Comparing my EAC R390A and the EAC/Servo 725, I am amazed that the selectivity is almost as good on...
Bill Riches
richesb@...
Mar 1, 1998 2:39 pm
685
6 dB loss, OK what about its noise figure???...
Francesco Ledda
fledda@...
Mar 1, 1998 3:11 pm
686
Bill, Nice to hear from you. I will have a letter going out to you this week with some 725 notes. According to my figures, there were at least this many...
Tom Marcotte N5OFF
trinit69@...
Mar 1, 1998 5:46 pm
687
... 73, Bill ... Submissions r-390@......
Bill Riches
richesb@...
Mar 1, 1998 8:06 pm
688
... Submissions r-390@......
Bill Riches
richesb@...
Mar 1, 1998 8:10 pm
689
Hello All, Finally got around to putting my Amelco R-390A on the bench last night. It needs a good scrub to clean it up. I have two questions. All the modules...
Dave Prince
davprin@...
Mar 2, 1998 1:13 am
690
Hello again, I think this was discussed recently here or on the Boatanchors but I can't find reference to it in my files. My Amelco has been modified to...
Dave Prince
davprin@...
Mar 2, 1998 7:04 am
691
Your PTO was made by Dubrow. The cover you need is shaped like the US state of Utah. 73 Tom ... Submissions r-390@......
Tom Marcotte N5OFF
trinit69@...
Mar 2, 1998 12:17 pm
692
G'day All, Have just updated my pages by putting up some technical details on each one as suggested by many of you. Drop in and have a peek, ...
Dave Prince
davprin@...
Mar 2, 1998 2:24 pm
693
Might be Dubrow. 73, ... Steve Stutman KL7JT/1 617-864-3725 voice 617-864-3790 fax Cambridge, MA, USA "Most people don't think about what they don't think...
Steve Stutman
sstut@...
Mar 2, 1998 3:13 pm
694
Are there any good R-388 and R-390A Techs in the No.NJ or NYC area ? Have a couple of clean sets which need an experienced checkout & upgrade.. Anyone...
AviDov
AviDov@...
Mar 2, 1998 3:37 pm
695
Is this the place? John ... Submissions r-390@......
JBurgwynjr
JBurgwynjr@...
Mar 2, 1998 11:11 pm
696
I've been working on an R-388 and am having trouble locating replacment screws for the bottom cover. They schould be stainless steel, pan headed with phillips...
Jon Oldenburg
jonandvalerieoldenbur...
Mar 3, 1998 1:06 am
697
On 2/28 thre was a poting on the gear materials used in the R-390. I got out the handy "Machinerys Handbook" for some additional insite. The gear refered to as...
Jon Oldenburg
jonandvalerieoldenbur...
Mar 3, 1998 1:30 am
698
... To: chris.cmr@..., WZiegler@..., crippel@..., dlw@..., Joseph.Fell@..., mc@..., WILAX@..., ...
Chuck Rippel
crippel@...
Mar 3, 1998 2:39 am
699
Hi, I found that the mounting screws for computer hard drives will fit the R-390 dust cover holes, and look good, as well. they were as close to the original...
Stan &/or Pat Muller
pmuller@...
Mar 3, 1998 4:48 am
700
4-40x3/8 phillips pan head. mil spec 51957-15. McMaster-Carr 9140A108. $6.00 per 100. The smallest fender washer is 5/8" o.d. #6 hole. 1/32" thick 90313A101. ...
Dr. Gerald N. Johnson...
geraldj@...
Mar 3, 1998 5:13 am
701
Hi, There is an outfit called Fran-Dan (I don't name them) Fastener in Cambridge, MA, which is area 617. I have bought various strange hardware in bulk at...
Steve Stutman
sstut@...
Mar 3, 1998 6:55 am
702
Can anyone tell me how they silence their R390A when they are transmitting on AM? I have a 32V2 and antenna relay with extra set of dry contacts. I have ...
Wes Bolin
k5apl@...
Mar 3, 1998 6:10 pm
703
... Try Jensen Tools - 800-426-1194 part numbers: 3b689, 3b691,3b699,3b695,3b701,3b703,3b705 and the xcelite handle is 3b609. 73, Bill Riches, WA2DVU Cape May,...
Bill Riches
richesb@...
Mar 3, 1998 6:12 pm
704
Opening the RF gain control connection has been used to mute receivers for a long time. Especially tube type receivers. Shorting the diode load contacts or...
Dr. Gerald N. Johnson...
geraldj@...
Mar 3, 1998 7:26 pm
705
... Thanks for the info, Tom. Looks like I've found a cover as well. Cheers to you and yours from DownUnder, -- Dave Prince VK4KDP davprin@... Brisbane,...
Dave Prince
davprin@...
Mar 4, 1998 1:41 am
706
The original message was received at Tue, 3 Mar 1998 23:01:47 -0500 (EST) from root@localhost ... r390@... ... <<< 550 <r390@...>... User unknown 550...
AviDov
AviDov@...
Mar 4, 1998 5:26 am
707
... Hi Wes, On the R390 put the break-in switch to "ON". When a contact closure is placed across the "break-in" terminal strip on the right rear of the radio...
Bill Riches
richesb@...
Mar 4, 1998 1:56 pm
708
Thank you for all of your responses. Using the Break In switch works FB. Hear you on the bands. 73, Wes ... Submissions r-390@......
Wes Bolin
k5apl@...
Mar 4, 1998 3:47 pm
709
I believe is an alodine conversion process on aluminum and cadmium plated steel parts commonly used in the aircraft and military radio industry. We young...
Dr. Gerald N. Johnson...
geraldj@...
Mar 4, 1998 4:52 pm
710
Greetings, I have a pair of NOS 4X250B tubes for sale - pair for $100. They are in sealed foil bags with a date code of 11/62 mfg by Amprex. 73, Bill Riches,...
Bill Riches
richesb@...
Mar 4, 1998 8:22 pm
711
This subject came up in Boatanchors, so I did some digging and found my scanned/OCR'd copy of the cost savings report. It lists 20 areas that were improved...
WILLIAM HAWKINS
bill@...
Mar 5, 1998 5:55 am
712
... Hi Dave, Orange Drop caps are made by Sprague. They are polyester or polypropylene film caps with an epoxy coating. Excellent cap for boat anchors and...
Bill Riches
richesb@...
Mar 5, 1998 1:55 pm
713
Hi, They are a good quality reasonable Q cap made by Vishay/Sprague as either 225P series metalized polyester film or 715P series polypropylene film type....
