Signal/One CX7
 Including Models CX7, CX7A and CX7B
 Last update 05/24/2024
 The total number of CX7s produced was about 850.
The exact number of CX7 and CX7As produced is not known.
However, it has been confirmed by someone who worked with Don in NJ that there were 6 CX7Bs built.
 240 are known to exist at this time.
In the "Model" column I will list the radios as follows:
 Florida rigs and a very few early California rigs were CX7
The majority of the California rigs were CX7A as noted on the SN tag
6 rigs built in New Jersey are true CX7B
CX7s that have been modified with the "B" Power Supplies and LED Keyer/Counter Board I will list as CX7A/B

There is an unconfirmed collection of 35 CX7s in SoCal.  Update: Recently two estate liquidators have acquired the estate of K6GA, Alan Emerald (SK).  While there aren't 35 radios in the collection there are indeed a great many as well as a treasure trove of parts.
Many of the radios are being sold on ebay while the radios in Reno have not been sold as of yet.

 

Model

Serial #

 Owned by Call Notes Photo
CX7A 0107214323 now unknown   From Joe Winnay, WW3KP then W6DQ
CX7A/B 156246465 now unknown   Has LED Keyer/Counter Board. From Joe Cro, N3IBX then W6DQ
CX7 00145 now unknown   May not be repairable. May be used for parts. From WW3KP then W6DQ
CX7 00143 now unknown   Not working but came with many spare parts.  From W6DQ
CX7A 00918      
CX7A 00232 (?)     Sold on ebay Jan 2015
CX7A ????? hal84ch (ebay id )   Purchased from rockwood427 7/08 never received it  
CX7A/B   careloco (ebay id)   Purchased from Las Vegas 8/08.  Has LED counter bd  
CX7A   mr.heathkit (ebay id)   Purchased on ebay 9-18-05 - from Mexico.  Never responded to email  
CX7A/B   bear-1937 (ebay id)   Purchsed on ebay from rockwood427 7/08  
Cx7A 00225     Sold on ebay Jan 2023  
CX7A 00142 John Abercrombie WB6DAX Complete restoration from parts. Sold in 2012  
CX7 Roger F6DGK No case From F5IHN  Photos are from F5IHN
CX7A   Lowell Albury C6ANY    
CX7 00129 Danilo Allegrini PY2LLE Sao Paulo, Brazil  
CX7 00124 Mark Anthony K9AM From KG9H. Original owner K2TR-Jan. 1970. confirmed ownership 6/16  
CX7A/B 00846 Ron Badger N9UG Factory B power supply and front panel. SN is chassis stamp number not tag
CX7A/B 00984 Jimmy Ball   From Ed Ord, SK  
CX7   David Bertman AB7B Restored and sold this radio several years ago. SN unknown  
CX7A 00684 Sam Bohol KH6BTV
CX7A 190247479 Wes Bolin K5APL From Jerry Squillaro WA2KTV (SK)  
CX7B 132242449 Mike Bottema K8EX Franklin Lakes, NJ SN tag  
CX7A/B 0077213316 Gianluca Bozzi IZ2NTY LED display & B PS Bd. From Joe Winnay, WW3KP,W6DQ,IK3GIF
CX7 00148 Heinz Breuer DH2FA,KM5VT Purchased 2001 but not working  
CX7A/B 188250498 Heinz Breuer DH2FA,KM5VT With LED counter board  
CX7A/B 00157 Ken Bruce NC6S Has "B" Pwr Supply Board. With CX7S speaker
CX7A 71-206 Vern Buerg N6MG (SK) Purchased in 1971 from Amrad in San Francisco. Status unknown  
CX7A/B 131237436 Bob Bynum NK4I Returning to operation after 13 years. 01/18 call reassigned.  
CX7A 00221 Monte Chaney KA0KVH Acquired from Bill Dennison Springfield, MO about 1985  
CX7A 039228386 Richard Comly N3AOG 2nd owner. With CX7S speaker
CX7A 00877 Sam Chrisbens N0KEI    
CX7A/B 129237432 Dave Curran KB4ET Rear panel stamp number 00129. From James Craft, KB4I (SK)  
CX7A/B 101232411 Steve Dauksch WA9VGI    
CX7A 150244458 Kenneth Davis K8QLA Both filters, manual and original shipping box  
CX7A 0781720308 Michael DesChenes KC1BKW Found at NH Hamfest. Orig owner W1PV or K1PV, not sure. From W1GZS
CX7 00162 Robert De Pierre K8KI Original owner Dr Gene Chenette, W4TLN  
CX7A/B Benjamin Deovlet W6FDU On ebay Oct 2010.  Excellent working radio.
CX7B 8974203 Bob Dietz W2RWD Franklin Lakes, NJ SN tag.  From Dennis Kidder W6DQ
CX7B 06510101 Bob Dietz W2RWD Original Chassis # 00969. Upgrades done in Franklin Lakes w/ new SN tag.  
CX7A/B 00255 Bob Dietz W2RWD
CX7A/B 00919 Bob Dietz W2RWD Purchased at a hamfest long ago by W3HWE, Gene Rosenthal then to Bob
CX7A/B 101230397 Bob Dietz W2RWD Paul Koller mods.  With LED counter board From Malcolm Brown K1MSG  
CX7A 00942 Bob Dietz W2RWD Don Arnott KD2CVW  
CX7A/B 00204 Bob Dietz W2RWD Don Arnott KD2CVW  
CX7 00921 Bob Dietz W2RWD with CX7S. From Arnie DePascale, K1NFE  
CX7 00871 Bob Dietz W2RWD Chassis # stamp.  From Bill WA8CDU  
CX7A 136240438 Bob Dietz W2RWD CA rig.  From W9DND then KG9H  
CX7A/B 00108 Bob Dietz W2RWD    
CX7A 004211312 Bob Dietz W2RWD Purchased from NU6X then W4WYT  
CX7A 057226367 Bob Dietz W2RWD    
CX7A 165246464 Bob Dietz W2RWD Bought on qth.com.  History unknown  
CX7A   Bob Dietz W2RWD Purchased from Ed Schuller
CX7A 0700720305 Bob Dietz W2RWD Not working. From Norm Drechsel WA3KEY
CX7 00183 Bob Dietz W2RWD Not working.  From Norm Drechsel WA3KEY
CX7A 177249493 Bob Dietz W2RWD Purchased from Paul Kluwe. Then Thomas Guam VE1BMJ. With CX7S speaker
CX7A 00862 Bob Dietz W2RWD    
CX7A 00120 Bob Dietz W2RWD From KN6GPR in box for 40 years  
CX7A 00250 Bob Dietz W2RWD Original owner Don Merz, N3RHT then KK5NO, Darrell Kova
CX7A 01294 Norm Drechsel WA3KEY 2 CW filters  Excellent  
CX7A 00895 Norm Drechsel WA3KEY 2 CW filters. Excellent. 5 CX7S speakers, CX7M mic  
CX7A 141245462 Norm Drechsel WA3KEY Good condition  
CX7A 00253 Tim Duffy K3LR Has the Jim Lawson W2PV mods made by Jim himself. From W4SX
CX7A 00854 Paul Dulaff W2NMI Found in storage for 30 years in original S1 box.  
CX7A 105242446 Paul Dulaff W2NMI    
CX7A 00110 Paul Dulaff W2NMI    
CX7A 00137 Paul Dulaff W2NMI    
CX7A/B 71-207 Frank Duvall, Jr. K9PYO Excellent cond w/ CX7S spkr.  One of the last rigs serviced by Paul Kollar
CX7A 7326710 Erik Eriksson SM2CLY Click "photo" button for link to restoration
CX7A 189248485 Bengt Falkenberg SM7EQL Second owner.  Purchased in 1996
CX7A 0734720247 Paul Faneuf KC3CDE    
CX7A 00881 Pete Ferrand WB2QLL    
CX7 00879 Ben Fisher K9BF From W9FIU  
CX7A/B 000229 Jim Florini W2BKD S/N tag hard to read.  SN not certain  
CX7A 00104 Jim Florini W2BKD    
CX7A 00140 Steve Flyte K7SF Purchased on ebay 7/18 by KB7RIK Dick Dunlop  
CX7A/B 00991 Steve Flye K7SF From VE3GNX. Then Mike Kelly, W0EWD
CX7A 125237435 Bill Gallier W4WX With CX7S speaker
CX7A 130238460 Jo Groeger DK3NG Gardena, CA radio  
CX7 00887 Jo Groeger DK3NG Florida radio with B power supply mods  
CX7A 0709720285 Jo Groeger DK3NG    
CX7A/B 035220345 Tom Gugler KD7MXX B mods made by Paul Koller  
CX7A   Hal Guretzky K6DPZ    
CX7A/B 0697720303 Gary A. Geissinger WA0SPM Has LED Keyer/Counter Board  
CX7A 00860 Cory Hamasaki AH6GI/4 Modified with 4CX350 tube.  
CX7A 0742710229 Svein Handeland LA3JKA    
CX7A   Marty Harpin KK4RF Given to Marty by original owner Dan Kay, K4HTY  
CX7A 0372110311 Ron Harshbarger K3PID Operational when last on air several years ago. With orig. manuals  
CX7A/B 00824 Ted Hartson WA8ULG B mods made by Paul Koller. From John Gross, W5VJH purchased in 1983.  
CX7A   Ichiharu Hayashi KD2HA One of the Las Vegas rigs orig. purchased by reseller radiomart  
CX7A 166247480 Chris Hendricks KI5DQE  
CX7A 101231405 Helmut Hengstenberg DL9CI Info provided by DK4SX.  
CX7A/B 15412xxxx Helmut Hengstenberg DL9CI Info provided by DK4SX. LED counter board. Part of SN unreadable.  
CX7A 01835 Teran Hermanson KF0HR From KE0FB (SK)
CX7B 42575 Fred Hoffmann K5OG Franklin Lakes, NJ SN tag. From K5AM
CX7A 71-215 Fred Hoffmann K5OG Restoration project from K5AM
CX7A 71-219 Fred Hoffmann K5OG From SC. Part of 77Sx deal.  Early CA rig from remaining FL parts
CX7A 01872 Fred Hoffmann K5OG Acquired 1/06.  Original owner W6HEW. Acquired new 3/71
CX7A 00025 Chassis # Fred Hoffmann K5OG Total restoration from parts. Early FL box. Now late TX box. Chassis #00025
CX7 00156 Fred Hoffmann K5OG Original owner K9QDN (SK)
CX7A/B 00234 Fred Hoffmann K5OG From T. Frank Smith, W5VA.  Has LED Keyer/Counter & B PS Board
CX7 01962 Fred Hoffmann K5OG Estate of Earle Scott, W6OAU (SK). From WB6VHK
CX7A 077229392 Fred Hoffmann K5OG Estate of Earle Scott, W6OAU (SK).  From WB6VHK
CX7 00218 Fred Hoffmann K5OG Estate of W6OAU.Gray stripe on panel. Has rack handles. From WB6VHK
CX7 00242 Fred Hoffmann K5OG Estate of Earle Scott, W6OAU (SK).  From WB6VHK
CX7A/B 01748 Fred Hoffmann K5OG Estate of Earle Scott, W6OAU (SK). LED counter. No case. From WB6VHK
CX7 00880 Fred Hoffmann K5OG Estate of Earle Scott, W6OAU (SK). From WB6VHK
CX7A 00187 Fred Hoffmann K5OG Original Owner, Bob Zinn, N5BZ 1970
CX7 090228389 Fred Hoffmann K5OG From Jim Osborne's father.
CX7A 00123 Fred Hoffmann K5OG Was missing many important parts but now restored
CX7A/B 0894710244 Fred Hoffmann K5OG Repairable. With LED readout.  From Bill Turini then K7AAE
CX7 00113 Fred Hoffmann K5OG From Bob Swaine - K7AAE. Has CW filter
CX7A 00868 Fred Hoffmann K5OG B power supply board.  From K7AAE
CX7A 158245460 Fred Hoffmann K5OG New caps but missing boards.  From K7AAE
CX7A 00990 Fred Hoffmann K5OG B pwr supply board.  From SK estate in FL then K7AAE
CX7A 00920 Fred Hoffmann K5OG Complete but needs testing. From K7AAE
CX7A/B 00146 Fred Hoffmann K5OG Has LED Keyer/Counter. From K7AAE
CX7 0656226371 Fred Hoffmann K5OG This will be a total restoration.  From Bill Turini then K7AAE
CX7A/B 055227378 Fred Hoffmann K5OG B mods made by Paul Koller. Purchased from XE1CK by K7AAE
CX7A/B 142242448 Fred Hoffmann K5OG B PS board.  From XE1CK, Dave-AB7B, Mike-K6ZSR then K7AAE. 
CX7A 00185 Fred Hoffmann K5OG Complete but untested.  From K7AAE
CX7A 00761 Fred Hoffmann K5OG From Ray Perez WD2AFJ then K7AAE
CX7 00189 Fred Hoffmann K5OG From estate of Gerald Drake W9RVD (SK), original owner
CX7 00125 Fred Hoffmann K5OG K5SBU original owner
CX7A 00941 John Holman W9DND Good condition. Orig owner Fred Harris, N4UR.  Then WW3KP, Joe Winnay  
CX7A 220305511 John Holman W9DND From W0YVA.  SS output mods attempted. Non working radio.  
CX7A 172248489 Stephen Hose KD1DT    
CX7 00102 Darrell Huth W6VHK Earliest know Signal One  
CX7A/B 00979 Jan Jellema K1ND    
CX7A/B 00930 Scott Johnson W7SVJ Purchased from a CBer.  History unknown.  Has B mods & LED Board  
CX7 00235 Jim Jorgensen K9RJ SK in 2006.  Current status of this radio is unknown  
CX7A 00215 Jim Jorgensen K9RJ SK in 2006.  Current status of this radio is unknown  
CX7A 182247477 Jefferson Joseph NJ2I From Mark, K5AM
CX7A 00501 Jefferson Joseph NJ2I Got this from a neighbour who was an NBC studio tech.  
CX7A 00908 Peter Klampferer OE3PKA Highly modified with all filters installed  
CX7A 00938 Darrell Koval KK5NO Purchased on ebay 07/2019  
CX7A 00112 Kevin Kramer N2AM Orig owner W9AVR.  Sold to WA0JYF  
CX7A/B 0713710254 Kevin Kramer N2AM Kevin Lesh K3RYL around 1979. Then to W3AXX  
CX7A 163247476 Nick Krikes AB6O Acquired from Chuck Banta, N6FX in the early 90s  
CX7A 00378 (?) Frank Krozel KG9H CA rig. SN tag removed when heat sink added. From WW3KP & W9DND  
CX7A 00946 Frank Krozel KG9H CA rig purchased on ebay. From W9DND  
CX7A/B 185248484 Harris Leck VK6AV w/ LED counter bd.  Orig. owner VE7BOX. Purchased from K9RJ (SK) estate  
CX7A 00228 John Kenney W7COI Original owner. Purchased in 1971  
CX7A   Kevin private ebay id packrat1977.  Purchased on ebay 6/12/08  
CX7A 0729710230 Kevin private ebay id packrat1977.  From K6ISJ 11/07. Prev owner NA6B  
CX7A 0810720279 Kevin private ebay id packrat1977  
CX7A 29222354 Ray LaRue W4BYG Original owner  
CX7A 00223 C F Lee VA7LI  
CX7A 00865 John D. Littlejohn W9NET Operational but not in perfect physical condition  
CX7A 01848 John D. Littlejohn W9NET Operational but not in perfect physical condition  
CX7   Arlie Magby WB5IFH Total of 6 rigs purchased thru Ham Trader ad. (SK) current owner unknown  
CX7   Arlie Magby WB5IFH Total of 6 rigs purchased thru Ham Trader ad. (SK) current owner unknown  
CX7   Arlie Magby WB5IFH Total of 6 rigs purchased thru Ham Trader ad. (SK) current owner unknown  
CX7   Arlie Magby WB5IFH Total of 6 rigs purchased thru Ham Trader ad. (SK) current owner unknown  
CX7   Arlie Magby WB5IFH Total of 6 rigs purchased thru Ham Trader ad. (SK) current owner unknown  
CX7A 00832 Mark Mandelkern K5AM    
CX7A   Mark Mandelkern K5AM    
CX7A   Mark Mandelkern K5AM    
CX7A   Mark Mandelkern K5AM    
CX7A 0732710233 Doug McClure KD8SST  
CX7A 17213315 Drew McDaniel W8MHV Purchased from VE7BOX, Lorne, 10/06  
CX7A 00298 Drew McDaniel W8MHV Estate of Earle Scott, W6OAU (SK). ebay 10/07  
CX7A/B 779720272 Scott McDonald KA9P All mods, homebrew keyer/counter & PS xistors in sockets w/ 4CX250
CX7A 14024647 Kevin McGrath K6TOP Recently purchased at an estate sale  
CX7A 061226368 David Milke WB9EGZ From Bill Robbins, WA8CDU  
CX7 00239 David Milke WB9EGZ From Bill Marvin, KB9IV  
CXt 00927 Doug Millar K6JEY From Wayne Spring W6IRD  
CX7A/B 0705720309 Gary Miller W0OGM Purchased on ebay 7/23/06  w/LED board. Has original box and manual  
CX7A 059305512 Serafino Miralli I0MFJ Acquired from Bill Turini  
CX7   George Misic KE8RN Purchased in 1997.  In working condition  
CX7A 204305510 George Misic KE8RN    
CX7A 00836 Rene Morris K6XW Orig. purchase 6/12/71 from AMRAD Supply, Oakland CA.  
CX7A 01757 Bob Moss W1RAM 1st CX7 was SN 253. Replace by factory with this CA rig  
CX7   Monte Mueller W7GVJ    
CX7 00967 Mark Mumaw NU6X From NI6Q, Brian  
CX7A 00989 Stan Nafziger KF4BY Purchased on ebay 6/07  
CX7A/B 01767 Stan Nafziger KF4BY Acquired from "Doc" Sheller  
CX7A 00910 Nick Neuhaus WB2VAE    
CX7A/B 195250497 Jim Osborne K7LYQ All mods done by W8CXS w/ S1 fan kit and all filters  
CX7A 153245457 Orlando Palmer KP4CY Previous owner NP4A. With CX7S  
CX7A 022215332 Orlando Palmer KP4CY Previous owner NP4A. With CX7S  
CX7A/B 0741710252 Orlando Palmer KP4CY With CX7S  
CX7 00320 Mark Palmer KC3PKK From Arlie Magby (SK)
CX7A/B   Corrado Paroni IZ2CPP LED Boards. Some non-standard mods. S/N tag missing
CX7A 047215327 Phil Patton K1FB W0OGM bought onebay 1/12/06. w/LED board & Speaker. Again bought on ebay  
CX7A 00943 John Pavelich VE3XKD Purchased at an estate sale March 20, 2016
CX7A/B 00813 Richard Peet KD0AG Purchased in 1987  
CX7A 00940 Rod Perala W5CZ  
CX7A   Dennis Petrich K0EOO    
CX7 00923 Keith Potter KA4PNO Acquired on Craigslist 2009
CX7 00121 Massimo Rampa IZ0KIO Paul Koller's radios. Purchased on ebay from W9VTC on Oct 8, 2005  
CX7A 0716720283 Massimo Rampa IZ0KIO Paul Koller's radios. Purchased on ebay from W9VTC on Oct 8, 2005  
CX7A 0699720310 Massimo Rampa IZ0KIO Purchased on ebay Dec 7, 2005.  Has LED readout  
CX7A 101230396 Bill Robbins WA8CDU    
CX7A/B 00168 Mike Roden W5JR Former owner Paul Kluwe - working
CX7 00492 Roberto Romano IK0LRG    
CX7A/B 00919 Bob Dietz W2RWD Purchased at a hamfest long ago by W3HWE, Gene Rosenthal then to Bob
CX7A 178250500 Barry Rudolph AA6EV Acquired at a hamfest years ago.  Works very well.  Also has a parts rig
CX7A/B   Peter Russo NJ1N "B" mods made by Paul Koller  
CX7   Tom Ryan VE1SB SN covered by IC heat sink. Purchased on ebay  
CX7A/B 0733710234 SARM   Southern Appalachian Radio Museum  
CX7A 00912 SPARC VE7CHR Society for the Preservation of Antique Radio in Canada  
CX7A/B 0696720304 Hideyuki Sato JJ1RUF Acquired in 2002.  Has LED board & 30 mtr xtal.  
CX7A 041219339 Carl Sawejko WA1PTQ Sold by K4WH 6/08. Has LED counter bd. but original Power Supply  
CX7A   Adolf Schendl OE5DS Purchased on ebay 6/12/08  
CX7A 0710720348 Adolf Schendl OE5DS Purchased on ebay 11/12/06 from WA1UNO
CX7A 00194 Mark Schiebl W6NSA With CX7 Mic. For sale on eham 12/06
CX7A 0751720271 Scott Schrader KD0REQ Purchased on ebay.  Needed a lot of work.  
CX7 00847 Ed Schumacher WA9GQK Purchased new by Herb Widiger, W9IVG, of Berwyn, IL  
CX7A 00196 John Seboldt K0JD Acquired at hamfest in 93. Repaired and working. Chassis # stamp 00196
CX7A 71-220 Gene Shablygyn W3UA/RA3AA Purchased on ebay 1/08  
CX7A 00229 Mario Simoncelli I0MWS Purchased from I0ORS May 2005  
CX7A 076228387 Roger Singley WQ9E Purchased at a hamfest  
CX7A 165846464 David Smith N1DMS Has LED Keyer/Counter Board
CX7 00503 Dennis Sokol W0JX Original owner - Edgar Freeman  
CX7A 00190 Dennis Sokol W0JX Original owner - Edgar Freeman  
CX7A 167248481 Mike Sparks KE5NXW    
CX7 00163 David Stewart NI5M    
CX7 00956 David Stewart NI5M    
CX7A 109233419 Ric Strachan C6ANI Purchased from N4AUV in 1986  
CX7A/B 00256 Mike Student W7MS Acquired from K5MBX in 2003  
CX7A 00290 Lawson Summerrow W4EMF Acquired from Bill Turini  
CX7A 00119 Peter Sundberg SM2CEW With CX7 speaker and mic  
CX7A/B 120235426 Bob Swaine KD7BS Hand built by Paul Kollar-working. From Bill Turini  
CX7A 101230401 Jean Paul Taillebois VE3JPT Sale was pending to Japan but status unknown.  
CX7A/B 00198 Jean Paul Taillebois VE3JPT Early FL rig purchased on ebay. LED counter/green panel across PB area.  
CX7A 00238 Brian Thompson NI6Q Update by Frank, W6AOA, in 70s. From Robert Sands, W7VO  
CX7A 01753 Brian Thompson NI6Q Estate of Earle Scott, W6OAU (SK). To WB6VHK.
CX7A/B 046224361 Chuck Tifft W6RD Upgraded with LED board and B power supply.  
CX7A/B 00453 Bill Turini KA4GAV Used daily  
CX7A/B   Henry Turner K5YDD Orig owner Bob Douglas, W5GEL  
CX7A/B 00993 Nick Tusa K5EF B PS Board, LED counter. From David Bertman, AB7B then NI6Q
CX7A 00280 Ray Wallace KE5GNZ Orig owner may have been Jerry Zazvorka here in Corpus Christi  
CX7A 00926 Jon Weiner K1VVC Originally at The Citadel Radio Club  
CX7A 00977 Harold Wilkinson W0HJW Orig owner W1FBG. Purchased from WA6IAF.  Koller mods in 1991  
CX7A 00861 Steven Wilson KA6S From Dave Dowler, KA6BFB  
CX7A/B 00959 Joseph Winnay WW3KP From AA7XT
CX7A 00929 William Yates N6YW Purchased from Wayne Spring, W6IRD
CX7A 0760710231 William Yates N6YW Orig owner Bill Voedisch W1UD, Western Mass. ARRL Section Manager
CX7 00261 Bob Zaepfel K4HJF    
CX7A 72212313 Bob Zaepfel K4HJF    
CX7A 127237437 Bob Zaepfel K4HJF    


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Created: June 20, 2006. Last Updated: May 24, 2024
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