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 RFI Problems? Download RFI Tip Sheet HERE

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 Quad 2 Meter Quad  Manual
A-505 220 Mhz Quad
A-607 2 meter ground plane  Manual
AM-100 AM Transmitter
image027 CW Filter
image020 Frequency Modulator used for 2 meter FM rigs like Gonset Gooney Bird.
AR-3 3 Digit Sequencer
BA-2000 2KW Beam Balun SPECS

BA-4-1500 Connected as Balun

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



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 Balun Kit

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
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 CW Keyer – INFO  Manual
LA-1  LA-1 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

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  SWR Meter  INFO
M-835 M835 Cropped SWR Meter  SPECS
M-840  image017  SWR Meter SPECSManual
M-850 Counter
MB Balun MB9-U 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 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-1  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  Radio Preamplifier – TR switching for transceiver
P312X  Mobile Radio Preamp  Manual
P-405 P-405 Large 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 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

Channel Cleaner SWL Loop Antenna

PB1-1 to PB-16  PB-1 Balun  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  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  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() 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 Active Filter
PFS-1 Field Strength meter
PK-44, PK-50  PK-44 PK-50 Keyers  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  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.
PP-1 12 Digit Encoder
PP-2 16 Digit Encoder
PS-90  IMG_193-2349-G12() Power Supply for PD-800, etc.
PT340 PT-340 Tuner Tuner – Product Reviews  Manual $109.95
PT-407 Antenna Tuner – 300 watt
PT-2500A image001 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 20131209_161430 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
RX-100 Rx-100 Large

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 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 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-205 Jones hand key
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 2 KW BALUN 1:1 50/75 OHM 1.7 TO 30 MHz  INFO $79.95
2K-1 1:1 2-KW DIPOLE BALUN $84.95