$49.99 Buy It Now or Best Offer
free,30-Day Returns
Seller Store originalnomadradio
(3141) 99.5%,
Location: Louisville, Kentucky
Ships to: US,
Item: 116356639858
All returns accepted:ReturnsNotAccepted
Palomar:Palomar
Type:Linear Amplifier
300A:300A
Band:HF
Here is an outright replacement for the PLUG-IN type relay circuit board used in the first version of the popular Palomar model “300A”. Most of the 300A amplifier built this way have a white face plate. SPECIAL NOTE! Just heard from a buyer that the threaded bushing where the top edge of this board is held with a short screw ISN’T LINED UP LIKE MY 300A! Fair warning, you might need to adjust the bushing. It’s mounted on a slot, so sliding it either side should make it line up properly. Then again, the screw is only there to secure it when being shipped. You can leave it off and it will work just the same. The screw is only a mechanical support, and has no circuit function at all. The factory-original plug-in circuit board used a relay type you just can’t buy any more. And 45 year-old relays just are not reliable. Clean the old relays all you wish, this won’t make them new again. And if your 300A doesn’t have this green edge socket behind the Load control, that means yours is newer, and can’t use this board. At all! We do sell a substitute for the two rare type “R50” relays used on the *NEWER* version, if that’s what you’re looking for. This circuit board has only two relays. The factory original board had three, using one of them for the receiver preamp. THIS BOARD DOES ** NOT ** HAVE A RECEIVER PREAMP ON IT. Not worth the trouble, so I left it off. The board in the pics is representative. They all look like this one. EVERY BOARD WE SELL IS TESTED IN OUR 300A. This board is *NOT* a prototype, ]ike the 300A boards we have offered the last couple of months. This is a tested, working circuit board. It worked just fine in my Palomar 300A. If your amplifier has acquired other faults in the last 45 years, CONSIDER THIS ROUTINE AND PREDICTABLE!!!! This board won’t fix the out-of-date electrolytic capacitors that you still need to change. It won’t fix the burned-out contact points in your amplifier’s band selector. That should be bypassed, just to improve reliability. And it won’t magically install proper parasitic-suppression chokes on the plate cap of each final tube. Yeah, if it has only a bare wire, that’s a fault. Needs to be fixed. Needs a proper 2-Watt resistor with four turns of wire around it, like you see on the two driver tubes. Since you’re plugging this board into an ancient piece of technology that has who-knows how-many additional faults. Any of those possible faults may damage this pc board, so clearly… NO RETURNS FOR ANY REASON NO MATTER HOW GOOD IT SOUNDS. If you don’t plan to keep it, just don’t buy it. Seems simple. We ship no later than the second business day following receipt of cleared payment. I prefer USPS Ground Advantage. It’s been VERY reliable and comes with tracking. I will insure it for the final sale price. IF YOU PREFER A DIFFERENT **USA ONLY** SHIPPING METHOD, CONTACT ME **BEFORE** YOU PAY! I will prepare a quote for the method you specify and send you an invoice for the corrected amount. This option is available to USA destinations ONLY! !!!! NOTE !!!!Shipping to destinations outside the US are by the Ebay GSP or Global Shipping Program. How much that will cost you is anybody’s guess. Ask Ebay if you want to know. Maybe they’ll tell you. They won’t tell me. Maybe they should rename the “GSP” the “Global Secret Program”. GSP ONLY!! GSP ONLY!! GSP ONLY!! No, I will NOT ship direct if you are outside the USA and its colonies. GSP ONLY!! GSP ONLY!! GSP ONLY!! If you know what it is and what it’s for, you can decide if you want or need it. And if you don’t know what it is, you probably don’t need it. Trust me on this. All routine Ebay precautions apply. Scammers take your nonsense elsewhere. Please. Thanks for looking and happy bidding!
Frequently Asked Questions About Palomar 300A plug-in RELAY board for transmit only in My Website
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