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 MISC - Collins MM1 Mobile Mic For Sale 
- FOR SALE: Collins MM-1 Hand Microphone.
The mic and cord are very good condition and it has been tested. The finish is shinny. There are some very minor marks on one side.
The key or "cam" is in very good condition, and is not cracked or broken. The plug has the PJ-068 nomenclature marking. I would rate this as CCA VG-Excellent. Photos are available.
Asking $150.00 shipped/insured by USPS Priority Mail. (CONUS only) USPO money order is preferred. Other payments options can be discussed.
- Listing #1736372 - Submitted on 07/16/25 by Callsign K1NR - IP: c-98-217-234-187.hsd1.ma.comcast.net
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- AMPHF - Collins around 30L1
- I can send a video of this amp working. This amp has RCA tubes in it. Puts out 600 watts. Clean inside and out. Prefer pickup but will ship at buyers expense. It’s gonna take a lotta packing. Call we can talk about it. 918-810-6767
- Listing #1736169 - Submitted on 07/14/25 by Callsign KC5TJT - IP: ip98-160-121-90.ok.ok.cox.net
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- MISC - Collins Mechanical Filter
- Looking for a Collins Mechanical Filter 526 9377 000 F500 Z4
- Listing #1735435 - Submitted on 07/08/25 by Callsign W1ZFB - IP: 205.174.113.61
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- RADIOHF - Collins S Line for sale
- Collins S-Line Radio set for sale. All parts function, purchase includes cables and manuals. Pictured Heil microphone with all the parts is not for sale. No microphone included. Type 516F-2 Speaker/Power supply serial # 13735, Type 32S-3 Transmitter serial # 12829, Type 75S-3B Receiver serial # 15299, Station Control serial # 38888, I think, stamped numbers are blurry. Instruction book for Collins 312B-4 and 312B-5 Station Controls, Instruction Book 75S-3B and 75S-3C Receivers, Instruction book for 32S-3 Transmitter. Located in Southern Illinois. While a local sale or meetup is preferred for these units given the age, they can be shipped as buyer’s cost. Units are very clean. Sold as is and no refunds. Please contact me with any questions. Pictures of individual units available on request. I will accept postal money order or paypal. Price is $1600
- Listing #1735085 - Submitted on 07/05/25 by Callsign KC9BG - IP: customer.chcoilx1.pop.starlinkisp.net
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 AMPHF - FS Collins 204F-1 3.5 KW Amplifier
- I am selling my Collins 204F-1 amplifier. This amplifier uses a pair of 4CX-1000 tubes. It will tune 2 to 30 MHz continuous. Collins reports the duty cycle as 24/7, at 2.5 KW. This amplifier is in very good condition. It was built for the military with heavy duty components, and vacuum relays.
Much better built than anything sold in today’s market. No displays, IC’s or proprietary software that becomes unobtainable. There is a lot of information on the internet on this amplifier. Pick up in Northwest Oklahoma. It is big and heavy. It is not weak and unfit! Sold as is, working. Selling for 3500.00. Cash, ZELLE, USPS money order accepted once the money orders clear my bank the amp would be released. Mason, K5yhx. 214 293-4050. More pics on request.
- Listing #1732943 - Submitted on 06/15/25 by Callsign K5YHX, Modified on 07/05/25 - IP: 172.59.121.174
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- POWERSUP - FS: 275V regulator 4 516F-2 and PM-2 PS
- Due to old 1956 design of 516F-2, or PM-2 power supply for Collins KWM-2 (A) or 32S series transmitters runs on 125V AC power Voltage, the 516F-2 supply should deliver 275V Low Volt becomes 330V Plus minus during receive mode of KWM-2(A), vacuum tubes get 330V which will shorten life of tubes and cause extreme hot temperatures affect other parts. KWM-2(A)and 32S series transmitter get lot of heat problems. I have a solution to keep the LV to exactly 275V either transmit or receive mode.Using 500V MOSFET and series of Zener regulators,LV is now tightly regulated which helps keep the VFO with no drift and no audio hum as it works as ripple filter.The board is 22mm x 30 mm by size, made with SMD components and can be fit to the sidewall of power supply. Price is $40 plus $6 for USPS. two or more it has to be shipped by priority, price is $13.check to my QRZ.com address.Other output V,150V or 250V or 300V if needed.
- Listing #1732006 - Submitted on 06/06/25 by Callsign K6HM, Modified on 07/05/25 - IP: 75-37-192-218.lightspeed.lsatca.sbcglobal.net
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- MISC - Collins PTO type 70H9 $25 shipped
- I don't know much about this item. An online document I found states it is for 1.5 to 3.0MHz. It also states NONE for the equipment it was used in. $25 shipped stateside. Payment by cash, check, paypal(buyer pays fees). Thanks for looking.
- Listing #1734991 - Submitted on 07/04/25 by Callsign AI4FR - IP: syn-065-035-251-165.res.spectrum.com
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- MISC - Collins Dummy Liad
- Collins DL1 dummy load.
New never used with original tags and manual. Still in plastic bag.
$165 includes shipping in US
- Listing #1734852 - Submitted on 07/03/25 by Callsign WA2JSB - IP: c-73-179-82-120.hsd1.fl.comcast.net
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- RADIOANQ - Wanted: Collins 75A-1 bottom cover.
- I am looking for the bottom cover to a Collins 75A-1. Let me know what you have, and the total price shipped to 32084.
Email or text only please.
- Listing #1734784 - Submitted on 07/02/25 by Callsign N4FUR - IP: 99-130-29-81.lightspeed.jcvlfl.sbcglobal.net
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- MISC - WTB: Treetop Ckts SSB adapter for 51J-4
- If you have a Treetop Circuits SSB adapter (product detector) for the Collins 51J-4 (model SB-51), I am interested in buying it.
- Listing #1734759 - Submitted on 07/02/25 by Callsign 4X6GP - IP: 109-186-80-182.bb.netvision.net.il
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