5:1 CUBE™ Unun – Model CU-5-1500 (50:250 Ohm, 1.8-61 MHz, 1.5KW PEP)
Application. For traveling wave, end fed or portable 20-31 foot vertical antennas the 5:1 unun makes a good transformer for converting 50 ohm coax to a 250 ohm feed point. If you use the antenna on multiple bands, the feed point impedance may not always be 250 ohms and use of the unun at high (>350 ohms) or low (<100 ohms) will require reduced power input or the unun may have its power ratings exceeded and damage to the unun may occur. The (5:1 conversion ratio will change for loads other than 250 ohms unbalanced.
Typical application:
Also available as a balanced output – CB-5-1500
Linear Amplifier RFI Kits
LINEAR AMPLIFIER RFI KITS
Palomar Engineers has RFI kits for many brand specific linear amplifiers as well as generic RFI kits for both AC powered and DC powered linear amplifiers.
Purpose. These kits are designed to choke common mode currents going into or exiting from your rig. Chokes are supplied for the RF In, RF Out, Relay Cable, and AC/DC power line. Use of the chokes often helps cure high SWR problems between exciter and power rig or between power rig and antenna tuner or direct to antenna. The AC/DC power line choke helps keep common mode current out of the power line which could cause interference to other devices connected to the same power line if not suppressed.
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HF Linear Amplifier Deluxe RFI Kit - 12 Filters for RF In/Out, AC power, Control Lines - Quadra, PW1, Acom Tokyo High Power
HF Linear Amplifier Deluxe RFI Kit - 12 Filters for RF In/Out, AC power, Control Lines - Quadra, PW1, Acom Tokyo High Power
SKU RFI-LA-DELUXE
List price
$169.95
Save 24%
$129.95
On Sale
Palstar LA-1K Linear Amplifier Deluxe RFI Kit - 7 Filters for RF In/Out, AC power, Control Lines
Palstar LA-1K Linear Amplifier Deluxe RFI Kit - 7 Filters for RF In/Out, AC power, Control Lines
SKU RFI-PALSTAR-LA1K
List price
$129.95
Save 23%
$99.95
On Sale
SPE 1.3/1.5K-FA HF Linear Amplifier Deluxe RFI Kit - 17 Filters for RF In/Out, AC power, CAT/USB/ALC/PTT
SPE 1.3/1.5K-FA HF Linear Amplifier Deluxe RFI Kit - 17 Filters for RF In/Out, AC power, CAT/USB/ALC/PTT
SKU RFI-LA-SPE1.5K-FA
List price
$169.95
Save 12%
$149.95
Linear Amplifier RFI Kits
LINEAR AMPLIFIER RFI KITS
Palomar Engineers has RFI kits for many brand specific linear amplifiers as well as generic RFI kits for both AC powered and DC powered linear amplifiers.
Purpose. These kits are designed to choke common mode currents going into or exiting from your rig. Chokes are supplied for the RF In, RF Out, Relay Cable, and AC/DC power line. Use of the chokes often helps cure high SWR problems between exciter and power rig or between power rig and antenna tuner or direct to antenna. The AC/DC power line choke helps keep common mode current out of the power line which could cause interference to other devices connected to the same power line if not suppressed.
