This section of the website is for downloading useful information including product catalogs and manuals for older Palomar Engineers products produced from 1965 onward.  As we research the engineering files we will try to post the pictures and manuals for all the products.  If you have information like old manuals please feel free to email a copy to


Got Consumer Electronic RFI Problems? Download RFI Tip Sheet: RFI Tip Sheet #3

Now taking donations of scanned manuals that we may not have.  If you have a manual that is not listed on this page, please consider scanning it into pdf form and sending it to – we will review it for posting and mention your name for instant fame in the Palomar world!  We are also accepting pictures of Palomar products which you can send in jpeg format.  Thanks in advance for your help with this project.

Product Manuals/Information

Product ID Picture Description Manual (PDF) Original Retail Price
A-502  A 502 Quad1 173x300 - Downloads 2 Meter Quad  Manual  
A-505   220 Mhz Quad    
A-607   2 meter ground plane  Manual  
AM-100   AM Transmitter    
  image027 300x225 - Downloads CW Filter    
  image020 199x300 - Downloads Frequency Modulator used for 2 meter FM rigs like Gonset Gooney Bird.    
AR-3   3 Digit Sequencer    
BA-2000   2KW Beam Balun SPECS  

20140203 122852 150x150 - Downloads

BA-4-1500 Connected as Balun

Kit consists of two type T200A cores two colors of #14 Teflon(R) insulated wire a SO-239 UHF connector with stainless steel ground lug hardware and winding instructions. Operate open or in a case of your choice. It is for use from 160 through 10 meters at full legal power at most impedances encountered.  IN CURRENT PRODUCTION   $39.95

BA 4 250 150x150 - Downloads


Model BA-4-250 is a 4:1 balun kit used to translate a 50 ohm input up to 200 ohms at power levels up to 250 watts when used with a matched load. With a matched load the SWR will not exceed 1.2 over the frequency range 1.8 to 30 MHz. The kit consists of a F140 ferrite core two colors of #16 Teflon-insulated wire. a UHF connector with hardware and an instruction manual   $29.95

BA 9 250 150x150 - Downloads

BA-9-250 Balun

Model BA-9-250 is a 9:1 balun kit used to translate a 50 ohm input up to 450 ohms at RF power levels up to 250 watts when used with a matched load. With a matched load SWR will not exceed 1:1 over the frequency range 1.8 to 30 MHz. The kit consists of a F140 ferrite toroidal core three colors of #16 Teflon-insulated wire a UHF connector with stainless steel hardware and an instruction manual.   $29.95

Bullet Antenna Product 150x150 - Downloads

Bullet end fed portable all band antenna

Need a high performance, multi-band, stealthy antenna system that is easy to setup and use? Get the Bullet, the antenna wire and insulator all in one convenient package (great for HOA restricted areas, camping and portable operations, etc.) and don’t forget to add the feed line choke.
(80-40-30-20-17-15-12-10-6 meters – 55 feet of 14 gauge, insulated wire, dog bone end insulator)
Palomar Engineers Bullet-40-55-80 Antenna Rev 2 $69.95
CI-103   CW/RTTY Computer Interface



DX-33, DX-34   Tri-band Beam Balun



FC-1   30 Ampere Filament Choke    
FL-4   Audio Filter  ManualSPECS  
IC Keyer  image010 - Downloads CW Keyer – INFO  Manual  
LA-1  LA 1 - Downloads Loop Amplifier with detachable loops for different frequency ranges:Model #        Coverage (KHZ)LA-1              Loop Amplifier Base – $159.95Omega           10-40 Khz (ELF) – $169.95WWVB            40-150 Khz (VLF) – $179.95LF                  150-550 Khz (Long Wave) – $169.95BCB               530-1700 Khz (Medium Wave/Broadcast) – $149.95160/80           1700-6000 Khz (Tropical/160-80M Ham) – $169.95HF-1               5000-16000 Khz (Shortwave) – $169.95  Manual  
LC-1  2237 - Downloads

Some radios have built-in antennas for the AM broadcast band (MW) and no connection for an external AM antenna. To connect to these radios use the Palomar LC-1 loop coupler. It takes the LA-1 loop amplifier output and converts it to a magnetic field that couples to the radio’s antenna. AM reception is much improved.

Manual $59.95
M827  image002 - Downloads  SWR Meter  INFO  
M-835 M835 Cropped 300x117 - Downloads SWR Meter  SPECS  
M-840  image017 - Downloads  SWR Meter SPECSManual  
M-850   Counter    
MB Balun P6220686 150x150 - Downloads Metal Box (MB) Balun Family in 1.5:1, 4:1, 9:1, 16:1, 1:1 – 3KW continuous, 6KW PEP 2-30 Mhz Metal Cased Heavy Duty  More Info  
MDB-2  2783 150x150 - Downloads Magnetic Dipole Balun – The Palomar MDB-2 is a magnetic dipole balun replacing the center insulator. It is for receive only (no transmit!) for 500 kHz to 30 MHz. It converts the balanced signal from the dipole to an unbalanced output for the coaxial cable. It prevents signal pickup on the outside of the coax thus reducing noise pickup. It also connects both sides of the antenna to the coax shield (at DC) so static charges can drain to ground instead of going through the radio. The balun has an So-239 to accept a standard PL-259 connector.  (thanks to Fred N8EKU for picture and description)    
MLB1  MLB 11 - Downloads  Magnetic Longwire Balun – Specifications: Frequency: 50 KHz – 80 MHz. Input: 50/75 ohms for coaxial cable. Output: High impedance. Connector: SO-239 (for cable) 12” #18 Teflon wire lead (for antenna). Mounting: Stainless steel eye bolt. Size: 1-3/4” diameter. Case: White PVC epoxy filled weatherproof.  Manual $59.95
P-201   1 Digit Decoder    
P-202   2 Digit Decoder    
P-203   3 Digit Decoder    
P-305   Preamplifier DC    
P-308   Preamplifier AC – for a receiver ONLY . It does not have TR switching internally    
P-310X  image018 - Downloads  Radio Preamplifier – TR switching for transceiver    
P312X    Mobile Radio Preamp  Manual  
P-405 P 405 Large 300x121 - Downloads The Palomar Engineers P-405 receiver preamplifier improves weak signal reception for the shortwave listener. Frequency coverage is 1.8 to 54 MHz in four ranges: 1.8-4, 4-10, 10-21 and 21-54 MHz. It provides up to 20 dB of gain and reduces image and spurious response. This preamp also features a two position antenna switch and -20 dB attenuator. Input and output is SO-239 jacks. 8.5 x 3 x 5 inches 1 lb. (210x70x130mm 0.5 kg). Requires a 9 volt battery which is accessible from the rear panel.  Manual  
P-408 P408 Large 300x124 - Downloads The Palomar Engineers P-408 is identical to the P-405 but, operates from 115 VAC 50/60 Hz instead of a 9 volt battery. Manual  
P-410X, P-412X   Radio Preamp Palomar Engineers P-410X P-412X Transceiver Preamp Manual  
P-411   16 Digit Decoder DC    
P-416   16 Digit Decoder AC    
P-420   Address Decoder    
PA-351   Active Antenna Manual  
PA-420  PA 420 150x150 - Downloads

Channel Cleaner SWL Loop Antenna

PB1-1 to PB-16  PB 1 Balun - Downloads  Palomar Engineers Balun 350W PEP, 100Watt continuous in ratios: 1:1, 1:1.5, 2:1, 3:1, 4:1, 5:1, 6:1, 7.5:1, 9:1, 12:1, 16:1Internal components are available as QRP Baluns/Ununs  Manual  
PCM1 PCM 1 108x300 - Downloads  Current meter    
PD600   Frequency Counter – SX-101, HQ-170, SP-600, SX-62, S-85/SX-99, HQ-100, SX-25, HRO-60, SX-100    
PD700 PD 700 - Downloads  Frequency counter for Yaesu, Kenwood, Drake and Collins rigs, Tentec Century 21, Triton IV, Omni A545, Argonaut 509, 505, SB-30-1, R-599, HW-8, Tempo One, Galaxy GT550A, Yaesu 901DM, FT_101ZD  Manual  
PD-800  IMG 193 2341 G12 150x150 - Downloads PD-8OO works with transceivers that have three oscillators in their heterodyne scheme. One usually a crystal oscillator, another a VFO or variable frequency oscillator, and the other a fixed frequency “carrier oscillator” . Three cables bring these signals to the Digital Display where, in two mixers, the exact operating frequency is regenerated. This Is displayed on a six digit numerical readout.Digital Frequency Counter – HW-101, 75S-1, KWM-2, TS-520, 1011D, FT-101, 75S-3, Sx-146/HT46, SB-401, HW101, SB-100, SB-303, Eldico S-119/R-104, 75A4, Yaesu FT-40B, Sommerkamp TS-288A.  INFO  
PF-300  pf 300 audio filter - Downloads Active Filter    
PFS-1   Field Strength meter    
PK-44, PK-50  PK 44 PK 50 Keyers 184x300 - Downloads  PK-44 had iambic keying with dot and dash memories, monitor speaker.  Fully adjustable speed, volume, weight and pitch.  Keys any rig old or new.PK-50 had memory messages.    
PK-100, PK-103, PK-105  PK 100 PK 103 PK 105 Keys 185x300 - Downloads  Machined brass by Kent of England.  Assembled by Palomar in California.  Rotary ball bearings. Smooth, effortless action.  The greatest improvement in keys in 20 years.  See additional pictures below for P-100, P-205.    
PP-1   12 Digit Encoder    
PP-2   16 Digit Encoder    
PS-90  IMG 193 2349 G12 768x1024 - Downloads Power Supply for PD-800, etc.    
PT340 PT 340 - Downloads Tuner Tuner – Product Reviews  Manual $109.95
PT-407   Antenna Tuner – 300 watt    
PT-2500A image0011 - Downloads Antenna Tuner – 2KW Continuous, 1.8-30 Mhz, 1:1 balun on input for better balanced line tuning.  Built in noise bridge. Antenna balun(1:1) at input of tuner.  Manual contributed by Sean Jonas N8ULP. INFO  MANUAL  $299.95
PT3000   The PT-3000 is a wide range impedance matching network that is designed to match a 50 ohm transmitter to a variety of antennas over the frequency range 1.8 to 30 MHz. The antennas may be coaxial cable fed, single wire against ground, or balanced two wire feed. The circuit is a “T” network with two series capacitors and a tapped shunt inductor. The PT-3000 has quarter inch diameter copper coils to allow continuous operation at high power and a built-in R-X noise bridge to allow tune-up without transmitting.  Antenna balun(4:1) at output of tuner. Products Reviews  Manual  #349.95
Rl-1   Relay Latch    
    160-10M Automatic AT 1.5KW with peak wattmeter   $1,459.95
RF Transformer – Variable 20131209 161430 150x150 - Downloads This is the famous 500 watt Palomar Engineers RF Transformer, which is most often used in mobile applications.  50 ohm input to 8, 12.5, 15, 22, and 32 ohm outputs
Manual $59.95
RF Transformer – Fixed RF Transformer Fixed 150x150 - Downloads heavy-duty R.F. transformer capable of matching 50 ohm source to 32, 28, 22, 18, 12, 8 or 5 ohms, depending on the specific tap select4ed.  Power handling capability is 2000 watts (6KW PEP) over the range 1-30 MHz (1-10 Mhz when working below 15 ohms). Circa 1982 RF Transformer Fixed  
RFI-ICOM-7300 RFI Icom 7300 Product 150x150 - Downloads RFI Kit for Icom 7300 Transceiver Palomar Engineers Icom 7300 RFI Kit Flyer $39.95
RX-100 Rx 100 Large 300x143 - Downloads

Noise Bridge produced in Red, White and Black colors

Antenna Tuning with a Noise Bridge

SB-1, SB-4   Super Baluns designed to withstand 10:1 SWR at 2KW. INFO  
QB12    QRP 1:12 Balun    
TW-1750   front 1024x662 - Downloads 1750 Meter Transmitter – 1750-meter transmitter kit from Palomar Engineers (160 to 190 kHz) intended for Part 15 long wave. $145.00    
UU-1 to UU-16   Ununs from 1:1 to 1:16 – 1KW    
VLF-A Palomar Engineers VLF Converter 300x141 - Downloads VLF Converter  Manual $89.95
VLF-S   VLF Converter    
P-200   Dual Tone Decoder    
P-411   Sixteen Digit Decoder    
P-420   Desktop Encoder    
PA-351   Active Antenna Amplifier    
PA-355   Super Snooper Antenna    
PA-360   Amplifilter(TM)    
USMC 12:1   12:1 Balun, 2-30Mhz, 4KW    
PK-100 Palomar Engineers Jones Key IAMBIC 300x229 - Downloads Jones keys – IAMBIC distributed by Palomar Engineers    
PK-205  Palomar Engineers Jones Hand Key 300x157 - Downloads Jones Hand Key distributed by Palomar Engineers    
SMB-5   Smart Bridge    
Ver-Tee Antenna    160/80, 80/40, 40/20, 20/10 1/2 size of dipole automatic band select    
1K   1 KW Balun 1:1 50/75 Ohm 1.7 to 30 MHZ  INFO $53.95
2K  2K Balun 150x150 - Downloads 2 KW DIPOLE BALUN 1:1 50/75 OHM 1.7 TO 30 MHz  INFO $79.95
2K-1  2K 1 Beam Balun 150x150 - Downloads 1:1 2-KW  BEAM BALUN (with mounting brackets)  INFO $84.95