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Hi Jim: Can you tell me who is selling those modification kits? 73s Wolfgang dk7cy

My first suspect with a “one bad band” rig, after verifying all the switch contacts, is the band crystal. They are now of the age where their failure rate is significant. If the swapped crystal

I Had to rebuild the power supply and get more than 800 watts output. 73s Wolfgang dk7cy

Thanks, I will give that a try!

All 7-Line and 4-Line filters are 50 ohms. Roofing filters are different. Rob, NC0B

I got a couple of Drake SL-2300 2.3-5645kHz Filters at a swap meet and am contemplating testing them with a NanoVNA.? I have three concerns. 1) Can I directly connect the filter to the Nano VNA? I am

Try swapping the 14.6 Crystal from your receiver. 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

I thought I posted this but will try again. My T4X-B just stopped transmitting on 75 and 160. Not sure if 160 worked before since I never tried it, but losing 75 meters is hard since that is my major

I would not suggest running 1290 watts out on FT-8, on 80m anytime soon. ( I get 1290 watts PO into a DL, using 3 x calibrated meters, bird, coaxial dynamics and also an array solutions

Thanks Glenn, I'll continue investigating, check a handful of other resistors but no dice.. Thanks, Michael.

I agree. Selling on eBay is not a walk in the park these days. I've run into sellers at hamfests who said they stopped selling on eBay because it became to much of a PITA. No one is getting rich

Hi Michael There are more AGC/s-meter information in this group: /g/DRAKE-RADIO/search?q=R-4B+AGC /g/DRAKE-RADIO/search?q=R-4B+s-meter -- best regards, Glenn, OZ1HFT

As I recall, the L75 had more than half the output of the L7. ?Even though the L75 only had one tube, it had a higher plate voltage than the L7 and thus the resulting power out. 73, Evan, K9SQG

I am not addressing Stan directly, but I think a comment here is useful. As an eBay seller for 25 years, I take exception to the term “epay” to describe sales on this valuable resource for finding

Thanks. I found some 201 series pots on Epay, but the price for 2 is what I gave for a 10 piece of the horizontal mount 201 series pot. The R-4B receiver sensitivity and S meter sensitivity pots are

Nice work on the replacement pot! AxMan Surplus in Saint Paul likely has exact replacements but not too likely they would take the trouble to look for them when the selling price is likely around

True. While not the ideal thing to do; here's what I did since I've been unable to find any of the original CTS 201 series pots of the correct value which mount vertically. CTS still has this document

As I have gone back and forth a bunch of times with this R-4C PTO that I needed to put new dials on, I have learned a few new things about these nylon-geared mechanisms. The latest that I learned

That's true. I'm trying to get an EL on 30m as I type this. Of course, 30m is <200W, so I don't use the amp at all. My old FT-1000D was great for 30 as it had 200W output. Steve Wedge, W1ES/4 Time

I use it for DXCC points and chasing various special events. I don't get the mass of stateside stations happily working each other every day. That's not fun to me. There is a specific skill set that