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Hi all, If anyone is familiar with the TS-50, I could use some advice. The radio had no RF out. Was narrowed down to the final board. It then started blowing fuses. It's not now and I don't know why however it does draw 6 amps on receive and also draws 6 amps with the power off. Checking the final transistors, in circuit, they test OK with a DVOM on diode test. I read no shorts from collector to base/ground. Reverse polarity diode tests good. This should be a simple diagnosis so maybe I'm missing something obvious? If anyone has any hints I sure would appreciate it. 73, Bob W4JFA

Hi Everyone. I have one of the above radios, the right hand tcvr works fine on tx/rx with correct display on both bands. The left hand side has the display but no rx/tx on either band although you can open the squelch by turning the knob. It beeps when you try and key the tx on that side. Putting a hand held close still no signals on the left radio. Does anyone have any ideas as to where I should look? I do have a workshop manual. Thanks Mike G3ZCC

ALAMOGORDO AMATEUR RADIO CLUB'S 39TH ANNUAL HAMFEST ARRL SANCTIONED 30 Aug 2025 Otero County Fair grounds (in Alamogordo NM) 7am to 3pm-ish Admission: Free!!! Vendors can set up day before 3 to 7pm Pre-register for Tables and prize tickets. Tables are $15.00 ea (if you have your own table and chairs $6.00 each table space) Electrical at most of the table locations but not all. Pre-register so we can get a good table count. Prize drawing tickets postmarked before 23 August $8.00 (pick up at event) If you cannot make it, tickets will be added to Main Prize drawing. Prize tickets at the door $10.00 Tickets postmarked before 23 August will be eligible for a pre-registration prize $50.00 cash. 1st Prize winner responsible for shipping or pick up at event. 2025 Prize list 1st FT710 AESS 2nd FTM-150R 3rd Mini 1.3 OLED Zumspot 4th DM-30TR There is a $1.00 Ticket drawing for a FT-4XR Looking for folks and groups to give presentations, let us know what ya can do Other Door prizes from Amateur Radio Related and local vendors, drawn throughout the event. Plenty of parking, RV's welcome, no hook ups but there is a dump station on site ARRL License testing will be conducted at 9am-ish. Please Bring a photo ID or 2 other forms of ID. FRN must be provided. FRN can be established by registering with FCC Check K5LRW website, for latest changes www.qsl.net/k5lrw/hamfest.htm Pre-register by Mail: Contact Hamfest Committee Chair Alamogordo Amateur Radio Club Rusty KI5RUS rjaskolo@... HAMFEST 2025 575-491-3631 call or text 12 Main St#383 Or Rick KB7SQF rick@... La Luz NM, 88337 Hamfest Committee member E-mail_____________________________ Ph#_________________________ Name______________________________ Call_________________________ Address________________________________City__________________St/zip__________________ Make Checks payable to AARC and include your callsign on Check Prize Tickets Before 23 Aug. at $8.00 x______=$__________ Tables at $15.00 x________=$________ your own $6.00x_____=$________ Dinner(pay as you go) How many?_____________(Location TBA) Testing or upgrading : Technician / General / Extra (Circle one)

MONTHLY REMINDER--Our Amateur Radio Groups Below are our amateur radio related groups. Some may be new enough there are only a few members. If one of those interests you, join it and give it some time to grow. It costs nothing and if there’s few members, it won’t be filling up your inbox while you wait for it to grow. ? Alinco /g/Alinco-Amateur-Radio Antenna Tuners /g/Antenna-Tuners Anytone /g/Anytone-Amateur-Radio Baofeng /g/Baofeng CHIRP radio programming tool /g/CHIRP EF Johnson /g/EFJohnson-Amateur-Radio Ham radio antennas https://ham-antennas.groups.io/g/main Ham Radio Help group https://hamradiohelp.groups.io/g/main Icom /g/ICOM Icom 746 /g/Icom-746 Icom 746 Pro /g/Icom-746Pro Kenwood /g/Kenwood-Amateur-Radio MFJ ham equipment /g/MFJ-Amateur-Radio National /g/National-Amateur-Radio RF Amplifiers https://rf-amplifiers.groups.io/g/main Swan /g/Swan-Amateur-Radio Yaesu FT-757 /g/FT-757GX Yaesu FT-767GX /g/FT-767GX

Good Day, Does anyone have any pictures of the inside of an MC-47 mic? The factory original mic for the TS-50. Thank you. Bob W4JFA

Hi all, I have a TS-50 that has all the foam that holds the front buttons in place deteriorated beyond use. I'll figure out something here but I was curious if anyone has already been through this and has any hints. Thanks in advance. Bob W4JFA

I'm checking the performance of my newly acquired SM-220 and note that the levels of the two tone generator measured at TP1 and TP2 are 5.8V p-p which is nearly double the specified 3V. So I decided to adjust them but found this to be impossible because VR108 is inaccessible (under the CRT) and I can't see VR107 anywhere. My PCB doesn't match the drawing in the service manual. Any ideas please? -- Mike G8GYW

Now that I've fixed the problem with my ACC2 socket I've been reading about the supposed benefits of using it for audio in instead of the Mic socket. Apart from making the front panel tidier (no mic cable) is it worth doing? Is the speech quality improved without any external processing? -- Mike G8GYW

I have for sale a Kenwood TS2000 HF/VHF/UHF all mode radio, which does 100 watts on HF, 6, and 2m, and 50 watts on 70cm. It also will do full duplex for satellite operation. Has a AM/FM subreceiver and will do dual receive so you can listen to the local repeaters while operating HF or 6 meters. It also has a built in autotuner, 2 antenna jacks for HF/6m plus a receive antenna jack, built in CW memory keyer, TCXO, IF DSP for noise reduction and narrow filters, and most other features you would expect in an HF rig, plus you also get these features on 2m and 70cm! It comes with a Rigblaster soundcard interface, the CAT control cable with gender changer, and USB soundcard so you are ready to go on the digital modes from 160 to 70cm. It has been MARS modded so it will work on 60 meters also. It is in great operating condition. The bottom of the case has some white marks on it. The top, sides, and face look good. Has power cord and mic. Asking $825 shipped for all. Paypal/MO 73 John AF5CC

I have a Westmountain Radio Rigblaster Plus soundcard interface to do digital modes from your computer with your rig. Great for FT8/FT4, PSK31, and other soundcard modes. It comes with the the usual Rigblaster cables to interface with the radio and soundcard-and the DB-9 to DB-9 to use for PTT switching if you need it. Has two of the round mic to RJ45 cables to interface your radio with the rigblaster as well. I will also include a parts unit Rigblaster which doesn't power on, and some of the cables that come with it. - This package will need a power cord or wall-wort as I don't have one for the Rigblaster plus. It is currently wired for Kenwood radios but you can wire it for any model radio just by changing some of the jumpers in the rigblaster. I will include an extra RJ45 cable so you can interface the rigblaster between it and a radio using a RJ45 mic connector, and then use a 8 pin round mic thru the rigblaster, if you like. - It also comes with a homebrew audio switching box which probably contains some good parts in it for projects as well. - I am asking $33 shipped in the US and can take paypal/check/MO. - 73 John AF5CC

? Ooops...it should read "...which formed part of the BCB attenuator..." 73...Jordan...

? Hi group.. I have a 450S which has served me very well for ~30 years now. Long ago, I jumpered the resistors which formed part of the BCB, effectively removing the attenuator. It was fine for years like that, but a few months back I noticed a drop in BCB sensitivity. All other bands are fine... I checked everything I could, replaced the jumpers and verified the ckt, to no avail. I checked the control line for that band at the 74LS245 and found what I thought was the problem, so this morning I replaced that IC. It didn't solve the problem. The only other thing I can think of is that one of the 2 RLS135 diodes for that band might be flaky so I checked them as diodes and they test fine. Is it possible that these diodes might operate fine for DC but not for RF...? I think I'll replace those two diodes and check again, but this has me a little stumped... 73...Jordan VE6ZT

Now here is a rare find. I have for sale a Kenwood 500hz CW filter, listed as the YF-3395C-1 but it looks identical to the more common YG3395C. This fits the 520, 599, 511, 510, and other radios with a 3.395mhz IF. It is brand new! I opened up the box and it still have the foam padding around it which has pretty much disintegrated. Has the original box and instruction sheet with it I am asking $50 shipped in the US and can take paypal/check/MO. 73 John AF5CC

I'm experimenting with this technology. I am attempting to assess if anyone would be interested in my experience constructing an Arduino-based DSP Noise Reduction implementation by Graham Whaley. One can read about his wonderful DSPHam device here: https://github.com/grahamwhaley/DSPham/blob/master/README.md It's quite feature packed and provides the user with: Several digital filters with differing bandwidth for FM, AM, SSB, CW which can be customized Two different AGC algorithms Noise Blanker and Notch Filter Selectable Noise Reduction Algorithms: Least Mean Squared (LMS), Spectral Subtraction, Two types of Moving Average, and Leaky LMS Three algorithms for decoding CW Approximate parts summary and cost: $36 Teensy 4.1 ARM Cortex-M7 Processor $15 Teensy 4.0/4.1 Audio Adpater Shield $ 4 Two-Line x 16 character backlit LCD (I originally used an RGB LCD, but then modified the code to use a cheaper mono-chromatic LCD) $ 2 Rotary Encoder Some additional miscellaneous parts, for 5V power-supply, wire, filter, mono-audio plugs, etc. Note: I have not put it in an enclosure yet. But one can see from the list above, adding DSP capability to an older radio can be done for a very reasonable amount. Please let me know if you are interested. 73 W7STF Sam