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Audio Mod Ranger Valiant - w8ji.com
https://www.w8ji.com/Johnson%20audio%20mods.htm
The Ranger has excellent audio with no changes except the value of a few coupling capacitors. Triangle wave response . The line trace is the audio at the gain control pot. The envelope is the RF output waveform. The Ranger closely replicates the …
Audio Mod Ranger Valiant – W8JI Website
https://new.w8ji.com/audio-modranger-valiant/
Valiant Audio Mods Johnson Valiant The Ranger and Valiant Audio System When I was first getting into amateur radio in Toledo, around 1960, I mostly listened to 160 meters. I was awestruck at how powerful and clear Ranger and Valiant …
Johnson Ranger audio driver mod - QRZ Forums
https://forums.qrz.com/index.php?threads/johnson-ranger-audio-driver-mod.701209/
Johnson Ranger audio driver mod. ... The bottleneck in Ranger audio is the driver transformer. Used a plate resistor to feed the parallel sections of the 12AU7. It was 40 years ago, so I don't recall whether I used a 10K or a 30K plate …
Ranger Mods|WA1HLR
http://amwindow.org/tech/htm/rangtron.htm
These husky tubes can deliver as much as 100 Watts of audio with the plate voltage supply of the Ranger, but the impedance presented to the tubes by the stock modulation transformer will yield enough audio to modulate 120% positive.
Johnson Viking Ranger I Transmitter: Audio mods by Tim WA1HLR
http://www.redwaveradio.com/4_3865ed29c8bf57f6_1.htm
Other modifications include: C-69 remove R-35 modulator screen dropping adjustable resistor (this is the big adjustable wire-wound resistor) Add an 8 mF 400 Volt electrolytic capacitor from the wiper to ground R-28 change this 820 Ohm resistor to 680 Ohm 2 Watts C-66, C-67, C-68 remove these .002 ceramic disc capacitors. They are
Johnson Ranger Modifications - AD5X
http://www.ad5x.com/images/Articles/Ranger%20Mods.pdf
This mod will increase the voltages in the Ranger. The measured voltages (before and after the mods) were as follows: Tube Rectifier Solid-State Rectifier Supply STBY PHONE STBY PHONE CW Key-up HV 616 551 756 626 660 R35 Tap 297 266 NA – Mods elim. - LV 368 338 406 380 396 HV/LV Power Supply Mods 1.)
Ultimate Ranger Audio Mods - Keeping the tubes, too (with ...
http://amfone.net/Amforum/index.php?topic=30337.0
Topic: Ultimate Ranger Audio Mods - Keeping the tubes, too (with pics)! (Read 23485 times) 0 Members and 1 Guest are viewing this topic. steve_qix. Contributing Member Offline Posts: 2558. Bap! Ultimate Ranger Audio Mods - Keeping the tubes, too (with pics)!
The Johnson Viking Ranger - Modifications
https://www.frostburg.edu/personal/latta/ee/ranger/modifications/modifications.html
On his web site he also has an excellent page covering the various audio modifications to Ranger: W8JI Ranger/Valiant Audio Modifications Page One conclusion that comes through loud and clear is that increasing the value of C52 , the coupling capacitor between V7A and V7B, the mic preamplifier stages, from 500pf to 0.01uf is about the only change in the audio system of any …
RadioMods Ranger RCI 2950 Mods Page
https://www.radiomods.co.nz/ranger2950mods.html
Ranger RCI 2950 modifications for the older (non DX) and newer models (DX) RCI-2950 DX (Second Generation) I was sent this e-mail from a visitor to my site, enjoy. I have news on the RCI 2950 dx. The way you convert the channels is that there is a jumper in the bag with the mic clip, you add that jumper to the block behind the face plate, put it on the pins on the right hand side, …
Modifications - Radio mods
http://www.radiomods.co.nz/modspage.html
Go To the President / Uniden Washington (MB8719) Mods Page Go To the PRO-500 D, PRO-510 XL, PRO-520 XL Mods Page Go To the Pro Series SD310 Mods Page Go To the Radio Shack HTX100 Mods Page Go To the Radio Shack TRC-485 Mods Page Go To the Ranger RCI 2950 / 2950 DX Mods Page Go To the Ranger RCI FC390 Frequency Counter Mods Page Go To the …
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