Re: RV75 Issues
Steve, Yes, good catch! I was so preoccupied with the obvious failed resistor that I overlooked the other failed resistor. Jim, My first thougfhts as well. With two failed resistors it makes no sense
By
Rick K8EZB
·
#75767
·
|
Re: Photo Notifications
Rick, found it. Nigel
By
nigel patterson G3YDT
·
#75766
·
|
Re: RV75 Issues
Rick I just can't figure it out. Nigel wrote:
By
nigel patterson G3YDT
·
#75765
·
|
Re: KLM 20-30-6LPA Wind Load Information and Tower Recommendation
I believe M2 can help with that. https://www.m2inc.com/? 73, W8GYV
By
Bill VE3ES <ve3es@...>
·
#75764
·
|
KLM 20-30-6LPA Wind Load Information and Tower Recommendation
I¡¯m considering putting up the subject antenna. ?KLM is no longer in business to ask them for information. ?Does anyone know the wind load rating and survival wind speed? Also, this antenna weighs
By
Michael Smith
·
#75763
·
|
Re: RV75 Issues
Right off the top of my head is you may be seeing power source issues due to failed caps. The Capars are evil incarnate, but it would not be a bad idea to recap all of the electros. I have too many
By
Jim Shorney
·
#75762
·
|
Re: RV75 Issues
Good catch. I missed that one. 150 Ohms in the pic I attached. Looks like it is the resistor in series with L205. Better check CR207 for damage too. 73 -Jim NU0C "VE7PS" <ve7ps@...> wrote:
By
Jim Shorney
·
#75761
·
|
Re: RV75 Issues
Jim, Thanks for the quick reply and photo. Yes, based on your photo, it does look like 10K (keeping in mind that I am looking at the RV75 for the first time ever!). I am inclined to tack in a new
By
Rick K8EZB
·
#75760
·
|
Re: RV75 Issues
Rick: You actually seem to have TWO failed resistors there. One is just above P/J 206 in the pic - the one that's split in half...but if you look to the right of that P/J, you'll see another burned
By
VE7PS
·
#75759
·
|
Re: Photo Notifications
Looks to be the same value as the resistor right above it in the image. (Which, BTW ¡®looks¡¯ like it is close to failure as well, although the dark spot on it could be debris from the grenaded
By
Joe - W7RKN
·
#75758
·
|
Re: RV75 Issues
Looks like maybe 10K. Same as the one next to it. It does not seem to be shown on the schematic I am looking at. Side note: if you have any Capar brand electrolytics on the boards, REPLACE THEM. They
By
Jim Shorney
·
#75757
·
|
Re: RV75 Issues
Click on "Photos" at the upper lefthand side of the "Messages" page. My photo is currently the first on the list and is labeled "RV75 ...." RB
By
Rick K8EZB
·
#75756
·
|
Re: RV75 Issues
Rick Could you end me a link on how to get onto the photo album for the Resistor? I've forgotten how. Thanks Nigel
By
nigel patterson G3YDT
·
#75755
·
|
Re: RV75 Issues
Following up on my OP on this topic from Mar, 2023. I have finally gotten around to some basic troubleshooting on this otherwise pristine RV75 and have discovered a damaged resistor as shown in the
By
Rick K8EZB
·
#75754
·
|
Re: Looking for L75 amp meter replacement.
Yep. No problem. It's the same meter (83T). That movement gets configured differently in the equipment. I'm guessing that your L75 has a shunt that is on the outside of the meter, since I believe the
By
Steve Wedge, W1ES/4
·
#75753
·
|
Re: Looking for L75 amp meter replacement.
In my limited experience with taut band meter movements the band usually lets go at one end or the other. A dead giveaway (no pun intended) is that the pointer won't move when you give it a gentle
By
Jim Shorney
·
#75752
·
|
Re: Looking for L75 amp meter replacement.
The new one is not FS=200uA but FS=50MV. The scale is from 0 to 300 DC Amps. Have to check on that. Rob
By
Roberto - YS1RS
·
#75751
·
|
Re: Looking for L75 amp meter replacement.
The resistors are the same value, so save yourself the work :-) Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from [Proton Mail](https://proton.me/mail/home) for iOS
By
Steve Wedge, W1ES/4
·
#75750
·
|
Re: Looking for L75 amp meter replacement.
I found with mine that the terminal was shorted to one of the lamp sockets. My L7 is later production with the meter¡¯s shunt being external. So now I have two good meters. Steve Wedge, W1ES/4 Time
By
Steve Wedge, W1ES/4
·
#75749
·
|
Re: Looking for L75 amp meter replacement.
Forgot to mention... yes, I will have to move everything from the new one to the old case. That is the open heart surgery I was referring to... Rob YS1RS
By
Roberto - YS1RS
·
#75748
·
|