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Re: Remove case from MN 2000
Well after a lot of trials and errors, I found that whomever placed it back in the cover put it on with the 4 outside screws for the case already installed. This is what was making it very difficult to remove the cover. After some prying and cussing, I got the case off out the back, by placing a short coax patch cable on the ALT and the Xmtr? so239's and pulling on the unit with a grip on the case. It looks completely clean inside and not an arc or anything obvious.
Serial Number is 955 don't know how many were made, but compared to the schematic I have it appears to be one of the first series. 73? Bob K6OXN |
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Re: DRAKE TECHNICAL NET ( May 7, 2023 )
Ah, that's where everyone was.? I was hoping for a critical audio report on a "new to me," TR4-CW-RIT that followed me home.? I also have no VOX on SSB and no delay on CW regardless of how the VOX control is adjusted.? Other than that, it's in "CCA Excellent" condition. With band condx as they were, it would have been a tough net.? I did not even hear slight splatter from 7241.0 but was waiting on 7238.0.? As I don't yet know all of the people on our net, I figured the folks which were on 7238.0 at 3:30 EDST we early and waiting for the net to start. According to Dr. Tamitha Skov, "The Space Weather Lady," we were hit with solar storms and that did the bands in: Chuck Rippel, K8HU -- -- Chuck Rippel, K8HU |
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Re: white line on 7 line knobs
Steve's technique is the same I used to whiteline literally hundreds of R390A knobs.? With Drake knobs, a trip to the hardware store for some "Blue Magic" polishing compound and a 30 seconds on a buffing wheel will make the knob look factory new. Take a pick or small screwdriver and remove as much of the existing white filler as practical.? Then use a small artist's paintbrush to apply the water-based paint white paint in the knob channel.? Finally, pass the knob / whiteline gently across a flat paper towel left to right in relation to the knob white line to remove excess paint and paint on the plastic surface of the knob.? Use this technique on both the top and front of the knob. If there is a little paint still on the knob, a new paper towel with a spritz of Windex on it will allow you to clean up the knob and have it looking factory new. They key here is using water based products.? White ceiling paint looks really great. I never put any other coating on the white line; it's just too easy to repeat the process above if the need ever arises.? I used this technique on all my Collins gear 30 years ago and "C Line" 15 years ago and it still looks great! Chuck Rippel K8HU -- -- Chuck Rippel, K8HU |
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Re: DRAKE TECHNICAL NET ( May 7, 2023 )
Jerry,
It depends on propagation. ?We've had checkins (not today) from Florida, Texas, Oklahoma, Minnesota, Michigan, Maine, Delaware, etc. but propagation holds all the cards. ?The time does not change, it is always 4 PM EST pm on Sundays.
If you can't hear the net directly, ?there are some remote receiver sites on the east coast that can be used to listen in.
73,
Evan, K9SQG -----Original Message-----
From: jerry-KF6VB <jerry@...> To: [email protected] Cc: M Gilger <wb0iqk@...> Sent: Sun, May 7, 2023 6:44 pm Subject: Re: [DRAKE-RADIO] DRAKE TECHNICAL NET ( May 7, 2023 ) On 2023-05-07 15:29, M Gilger wrote:
> Evan, K9SQG was our net control for today's 7.238 tech net. We had to > run the net on 7.241 due to 7.238 being occupied. The band was in > terrible shape overall. Is this mostly an East Coast thing?? I was listening, nothing heard. What time does it run, in UTC?? I read "4:00pm EST / 3:00PM CST".? Does it change for daylight savings time? ? ? ? ? - Jerry, KF6VB |
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Re: Remove case from MN 2000
¿ªÔÆÌåÓýCorrection¡ not ALL 4-line boxes have ONE rolled edge on the front of the cabinet as rcvrs an txs have rolled edges front and back. ?The MN-2000, MN-4, CC-1, C-4, W-4, and WV-4 all have rolled edges on the front only. The front panel and guts slide in from the rear on those.Sorry for any confusion. 73 Peter VE7PS? On May 7, 2023, at 7:20 PM, VE7PS via groups.io <ve7ps@...> wrote:
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Re: Remove case from MN 2000
¿ªÔÆÌåÓýBob¡.just thought of something else. ?There should be a rolled lip around the edge of the front of the outer cabinet. ?Wonder if someone put it in backwards?????The rear of the cabinet has NO rolled edge like all other 4-line cabinets. 73 Peter VE7PS On May 7, 2023, at 6:54 PM, K6OXN Bob <bobk6oxn@...> wrote:
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Re: DRAKE TECHNICAL NET ( May 7, 2023 )
Jerry, Yes, it does change relative to UTC, as it remains 1600 Eastern (whatever) time.? Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from Proton Mail for iOS On Sun, May 7, 2023 at 18:44, jerry-KF6VB <jerry@...> wrote:
On 2023-05-07 15:29, M Gilger wrote: |
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2-B AGC voltage ¡ª possibly resolved
I checked into the Sunday net today and Jeff, WA8SAJ, suggested that I check?the RF GAIN pot. This is a 15M (!) pot and is not very easy to find, these days.? I measured the pot across the entire part, since there¡¯s one end that isn¡¯t connected to anything.? The pot measured 26M ohms.? My parts receiver¡¯s pot measures 20M, as does my good 2-B. These parts obviously appear to age by getting more and more resistive.? I should be able to get this 2-B to meet spec with the pot at 20M. With these resistances so very high, one can¡¯t really set the resistance to 15M ohms directly but we can set it indirectly by measuring the total resistance and subtracting 15M from it, then setting the resistance from the wiper to the open end to the value of the difference. One can then set up the sensitivity with the pot at 15M, which is what the value should be with the RF GAIN fully CW.? It not the best way but it¡¯s a workaround for this nearly Unobtanium part as it ages.? Thanks again, Jeff! 73, Steve Wedge, W1ES/4 Time flies like an arrow. Fruit flies like a banana. Sent from Proton Mail for iOS |
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Re: Remove case from MN 2000
¿ªÔÆÌåÓýBobDo not remove the front panel screws! Put the feet back on their screws. Not going to be easy now but you should try and get the feet started on the thread, then pull on it to keep the screw from rotating and finger tighten the feet as much as you can. Remove any other screws in the bottom of the cabinet. Six as I recall??? Push the front panel towards the ?rear and remove the tuner box as one unit though this is typically quite tight. If someone has not used the original screws on the inner cover this can be REALLY tough! You will hear some scraping. If the top, bottom, or sides have been compressed inwards, this will also complicate removal of the inner box. Try to straighten it as best you can. Good luck! 73 Peter VE7PS? On May 7, 2023, at 6:54 PM, K6OXN Bob <bobk6oxn@...> wrote:
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Re: Remove case from MN 2000
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Remove case from MN 2000
Ok I will bite. How do you remove the case from an MN 2000 antenna tuner. There seems to be screws near the feet but of course they don't come out. 2 screws on the bottom and 4 sheet metal screws on the front panel.? How do I get the case off to tighten the feet screws and check the inside before using it? It is built like a tank.
73? Bob K6OXN |
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Re: DRAKE TECHNICAL NET ( May 7, 2023 )
On 2023-05-07 15:29, M Gilger wrote:
Evan, K9SQG was our net control for today's 7.238 tech net. We had toIs this mostly an East Coast thing? I was listening, nothing heard. What time does it run, in UTC? I read "4:00pm EST / 3:00PM CST". Does it change for daylight savings time? - Jerry, KF6VB |
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DRAKE TECHNICAL NET ( May 7, 2023 )
Evan, K9SQG was our net control for today's 7.238 tech net. We had to run the net on 7.241 due to 7.238 being occupied. The band was in terrible shape overall.? There were 18 stations participating using the following equipment.? B line: ?1 C line: ?2 TR4: ?2 TR5: ?5 TR7: ?5 Other: ?3 73's, Mark, WB0IQK |
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Re: white line on 7 line knobs
Markal paint sticks have been around for many years and are available on ebay for cheap John On Sun, May 7, 2023 at 11:56?AM KL7AM <w7apm@...> wrote: I have found whiteout as used for typing or writing on paper to work very well |
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Re: TR7 Filters and Knobs
Now that you mentioned it, I remember seeing this product.
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73, Steve Wedge, W1ES/4 Time flies like an arrow.? Fruit flies like a banana. Sent with Proton Mail secure email. ------- Original Message -------
On Sunday, May 7th, 2023 at 3:05 PM, jerry-KF6VB <jerry@...> wrote: On 2023-05-07 10:16, Steve Wedge, W1ES/4 via groups.io wrote:I am fairly certain that the discs got ruined by the simple green at*** Now that I remember, there was a dustup some years ago with the |
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Re: TR7 Filters and Knobs
On 2023-05-07 10:16, Steve Wedge, W1ES/4 via groups.io wrote:
I am fairly certain that the discs got ruined by the simple green at*** Now that I remember, there was a dustup some years ago with the military. They were washing airplanes with Simple Green, and it was causing corrosion. The company developed an alternative: - Jerry |
Chuck Rippel - K8HU and ex - NMN