Product List

Products include:  RF Linear Power Amplifiers (70, 33 & 23cm bands), 70cm Band-Pass Filters & Duplexer,  Low Noise Pre-Amplifiers (LNAs), Ultra-Wideband Amplifiers (kHz to GHz),  Bias Tees,  TV Transmitters (VUSB-TV, FM-TV & DVB-T), FM-TV Receiver,    —  For detailed spec. sheets for each product, click on the link next to the description for a .pdf file that can be down-loaded.


note:  power ratings are:  P(saturated) for CW & FM  / P(pep) for VUSB-TV & SSB  /  P(rms, avg) for DTV

70cm, 70W/25W/10W, 53 dB Amplifier   Model 70-9B Specs rev1-21

70cm, 20/10/3 Watt, 53 dB Amplifier    model-70-7b-specs-rev12-16

33cm, 50/20/6 Watt, 50dB Amplifier    Model 33-3B Specs rev 2021

33cm, 20/6/2 Watt, 42dB Amplifier (also works on 70cm)  Model 33-1A specs 4-2021

23cm, 30/15/4.5 Watt, 49 dB Amplifier   Model 23-11A Specs rev1-21


70cm, 420-450MHz (< 1 dB) bandwidth, Band-Pass Filter  Model 70-BPF Specs

70cm, 6 MHz bandwidth, Band-Pass Filter     Model ATV-BPF-XXX specs

70cm, UHF Duplexer (discontinued, clearance sale $100)   Model ATV-DPX specs revSept2019

LNAs & Broad-Band AMPLIFIERS  — product brochure  —  Amp brochure-2021


70cm, 0.5dB NF, 21dB gain, LNA, Pre-Amplifier, 33cm, 20/6/2 Watt, 42dB Amplifier  NEW PRODUCT !   Model 33-1A Specs rev12-16—  Model 70-LNA specs

33cm, 0.7dB NF, 16dB gain, LNA, Pre-Amplifier NEW PRODUCT !  —  Model 33-LNA Specs

23cm, 0.7dB NF, 14dB gain, LNA, Pre-Amplifier — Model 23-LNA Specs

Wide-Band LNA, < 0.8dB NF 2m thru 23cm, useful 50MHz to 2.4GHz  NEW PRODUCT !WBLNA3specs rev12-20

Bias Tee –  7-350 MHz, 50V, 2 Amps,  NEW PRODUCT ! —  BiasTeeSpecs

Bias Tee –  144-2400 MHz, 50V, 2 Amps —  BiasTeeSpecs

Ultra Wide-Band AMPLIFIERS  — NEW, Lower  Prices ! ! !

1 kHz – 1.5 GHz (-3dB BW), useful to 7 GHz, low-noise 2.5 dB NF, 23 dB, +12 dBm     Model UWBA-101 Specs

1 kHz – 5 GHz (-3dB BW), useful to 10 GHz, 11 dB, +14 dBm     Model UWBA-102 Specs

250 kHz – 3 GHz (-3dB BW), useful to 8 GHz, 20 dB, +22 dBm  NEW PRODUCT !    Model UWBA-103 Specs


70cm, 10W/3W/1W,  analog, NTSC, VUSB-TV Transmitter    model-70-10ad-specs-rev12-16

23cm, 3 Watt, analog, NTSC,  FM-TV Transmitter    Model 23-1 Specs rev April 2017

33-23cm, 20 dBm, analog, NTSC, FM-TV Modulator   Model 23-8 Specs-April 2017

70cm, 33cm & 23cm, hi-def (1080p), DVB-T, Digital TV Transmitters — order a modulator (such as a model HV-320E ) from Hi-Des (  ) and use one of our rf linear power amplifiers.


23cm Down-Converter, 22 dB conv. gain, 0.9 dB NF   Model 23-7 Specs Rev 10-18

23cm Up-Converter, 15dB conv. gain, programmable LO  Model 23-6 Specs Rev Oct 2018

FM-TV RECEIVER — 70 MHz IF Amplifier & FM-TV Demodulator    — use with the model 23-7 down-converter to have a complete 23 cm FM-TV receiver    Can be used with any down-converter to make a microwave FM-TV receiver.    Model 23-5 Specs rev 03-17

Programmable Crystal Oscillators — specifically designed as crystal replacements in PC Electronics AM-TV transmitters, $20  Also available 100 kHz to 212 MHz for $30  —  Model PXO-xxx specs-rev 2

DETAILED SPECS: Detailed spec. sheets for all products in .pdf format, complete with photos and spectrum plots, are available here on this web site. Click on the links above highlighted in blue.   Instruction manuals are also available upon request.  All products come with a test report.

Rev:  27 April  2021, kh6htv