I have found a transformer and it's on the way to me! Thanks for the suggestions. 73 Jim W7RY Still looking for a good Kenwood TL-922 filament transformer. Thanks! Jim W7RY __________________________
What are you driving it with? Do you have ALC hooked up? What mode? Thanks 73 Jim W7RY On 11/18/2018 8:53 PM, BY THE LAKE wrote: My AL80A began acting up a few weeks ago...nothing serious but bafflin
Or you could just use one of my input relay boards. Relay is SUPER fast! They will be back on eBay in just a bit. I was on vacation and closed the store. Just search for w7ry. Thanks 73 Jim W7RY On 1
Those relays that Rich (and I ) used are mostly unavailable. I used to buy them 100s at a time. No more of them can be had. Most of what you find on eBay are seconds and most don't work. Or they are
Not necessarily! Really there no need for a faster input relay or a faster output relay. That is all false logic. I matters NOT which relay closes or opens first... AS LONG AS the RF is not sent from
Oh... And if the relays (either of them) are NOT ready for RF, you get hot switching. As well... If they are DE-energised before RF stops flowing from the exciter, you also have hot switching. Thanks
Are there serial numbers on the grid mounting disk/cone below the plate? Thanks 73 Jim W7RY 73, Jim, W2XO - Paul KW7Y _______________________________________________ Amps mailing list Amps@contestin
A 6' cable between the amplifier and the radio is minimum length. I use RG58 or RG8-X. Then see what the SWR is. Thanks 73 Jim W7RY Before I burrow into it, what's the most sensible approach? Acquire
Its actually very simple Jim. Don't send RF until the amplifier is ready. Not doing so, makes the relays hot switch. It matters not which one is energized before RF is sent. As long as they both are
Then they are not Eimac. Thanks 73 Jim W7RY No - Paul _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
The tuned input is a very complicated circuit of varying impedances, so cable length can change the match between the exciter and tubes. Are both tubes glowing? Key down in RTTY mode. Do both tube g
RF parts is selling "re-branded" Amperex 3-500 tubes which are nothing more than Jolita (China made) 3-500s. Just did a picture lookup on Google and saw them. They have 5 disks vs the original Ampere
I can do that but it will be a bit. Jim Thanks 73 Jim W7RY _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps ____
The secondary is 10 ohms. The primary: Black to Black/Yellow is .6 to .7 ohms. (SSB winding) Black to Yellow is .9 ohms. (CW winding) Same on the other primary. You can run each primary separately to
Hey Ulf.... The late Paul, WD7S, had issues with this too... Or was it was the late Jerry, K8RA... I don't remember. Both great guys! One of them had the same issue where they had to add a resistor a
Agreed. That is why a standard 100 watt light bulb in series with the windings works great. If it is really shorted, then it just glows brightly. If its ok, it glows depending on the load. Thanks 73
Hey! I'm looking for a quantity of the 9 pin plugs, (pins and plastic housings) for the Ten-Tec Titan. They are NOT Molex. They look like thy are AMP with the larger pins. They are square, one male a
Agreed! Be specially careful with RF transistors, and other specialty/high priced ICs and special purpose transistors. I have ordered several on eBay and received counterfeits. Thanks 73 Jim W7RY I d
You must have tested it on the same band, without ever adjusting/changing the tune or load. The tuning and band was parked in spot that turned it into a TPTG oscillator. Thanks 73 Jim W7RY You sir ar
I have a friend, K7GS that has a need for a 1/4" right angle drive unit. Anyone have something they would sell? 73 Jim W7RY -- Thanks 73 Jim W7RY _______________________________________________ Amps