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  1. Heathkit_SW-717.jpg from https://people.ohio.edu/postr/bapix/SW-717.htm
  2. KenwoodR5000.jpg from http://www.rigpix.com/kenwood/r5000.htm
  3. KenwoodTS820S.jpg from http://www.rigpix.com/kenwood/ts820s.htm
  4. RSP2proA-1.png from https://www.sdrplay.com/rsp2-and-rsp2pro/
  5. RSP1-1.png from https://www.sdrplay.com/rsp1/
  6. micromix400 from https://www.amazon.com/Behringer-Micromix-MX400-Low-Noise-4-Channel/dp/B000KGYAYQ/ref=sr_1_1?gclid=CjwKCAiA5JnuBRA-EiwA-0ggPQs2w9Qhk-QfEZVOJtVhxU8nvLh9U_okp74IxSH73P0GWxXf8mITaRoCipEQAvD_BwE&hvadid=178384866163&hvdev=c&hvlocphy=9004247&hvnetw=g&hvpos=1t1&hvqmt=e&hvrand=4258534328499525522&hvtargid=kwd-3577610805&hydadcr=29178_10197775&keywords=micromix+mx400&qid=1573350950&sr=8-1
  7. LF-400B_LfAntenna.gif from https://www.lfengineering.com/products.cfm
  8. ApexRadio703G-DA_DisconeAntenna.jpg from https://www.universal-radio.com/catalog/scanants/5162.html
  9. NooElecUsbDongle.jpg from https://www.nooelec.com/store/computer-speripherals/usb-ota-receivers/dvb-t-receivers/nesdr-mini.html
  10. Timewave ANC4 from https://timewave.com/product/timewave-anc-4-antenna-noise-canceler/
  11. Channel Master rotator from https://www.channelmaster.com/TV_Antenna_Rotator_p/cm-9521hd.htm