Bryan's Ft101 Yaesu Ham radio..these tubes are hot скачать в хорошем качестве

Bryan's Ft101 Yaesu Ham radio..these tubes are hot

Quick demo for ya Bryan. There are several opinions on how to tune these up. Heres a few helpful links https://www.awasa.org.za/articles/59-... https://www.qsl.net/nw2m/ft101.html http://www.foxtango.org/ft101/foxtang... Quick Tune-up Procedures If you have ever purchased a FT-101 transceiver without the Instruction Manual, you know it can be very intimidating to operate until you perform the tune-up process a time or two. Without 'tuning up' your transmitted and received signals really suffer AND could actually damage the tubes in the power amplifier. I always suggest that you download the Instruction Manual for any FT-101 radio or accessory you own. Even older radios have web pages that can provide you copies at very reasonable rates. An Instruction Manual was made for each and every FT-101 radio and accessory. These are free across the Internet. Even the FT-101 Service Manual is available (32MB PDF). See the FT-101 Repair Facilities section on this page for the link. No excuses! The FT-101 series is a very mechanical radio. The size, selection, and operation of this rig allow for very high-Q circuit tuning. It is a very strong point with the FT-101 series. As with any high-Q circuit, it must be continuously tuned for maximum efficiency. Once learned, it takes only a few seconds to perform. You should re-tune anytime you change bands, change antennas, or move a significant distance (in frequency) from where you last tuned up. This may be as large as 200 kHz on the 10 meter band (10-15 turns of the VFO dial) or as little as 15 kHz on the 160 meter band (one turn of the VFO dial). Before you begin, you should allow the rig to warm up (with the heaters on) for at least 15 minutes. This allows the rig to become frequency and temperature stable. Put the Meter switch into the 'IC' position with the CARRIER and MIC control fully counter-clockwise. Throw the MOX switch to engage the transmitter and read the meter that is now displaying the idling current. The current should read 60ma on the scale. If it does not, adjust the BIAS control until 60ma is obtained. Move the Meter switch to ALC and ensure a full meter deflection to the right. Adjust the ALC control as needed. Return the MOX switch to normal PTT. Please remember to tune-up into a well-matched antenna system or dummy load representing a 50 Ohm load. Keep all tune-up steps to under 10 seconds of transmitting to prevent damage to the Power Amplifier tubes! After each 10 second transmission, allow the tubes to cool for 10 seconds. Then repeat. Do not exceed this 50% duty cycle. The tubes can only dissipate 30 watts each! You can put heat into the tubes faster than they can dissipate that heat! The earlier FT-101 manuals used a tune-up procedure which 'peaked' the output (PO) while 'dipping' the grid (Ic) current. By the FT-101F series, the procedure was simply a 'peaking' (PO) process as depicted in the Instruction Manual. With a little practice, you will be able to perform these procedures within 10 seconds. Really! Tune-Up Procedure for SSB, CW, and AM: After a 15 minute warm-up, and Idle Current confirmed at 60 ma: Select the band and general operating frequency to be used. Place the Meter switch in the Power Out (PO) position. Rotate the PRESELECTOR for maximum receiver noise/signal output. Place the CARRIER control to position 4 and MIC control to minimum. Momentarily engage the MOX or PTT transmitter control for a maximum of 10 seconds. Adjust the PRESELECTOR, TUNE, and PLATE controls for maximum meter deflection. Disengage the MOX or PTT transmitter control and allow the rig cool for 10 seconds. Increase the CARRIER control two units and repeat. NOTE: If using AM, peak the CARRIER for 30 watts maximum, then increase the LOAD control one unit. The PO meter will deflect slightly on voice peaks. Adjust CARRIER, MIC, and PROCESS controls for the proper output as desired. Monitor the Meter for grid current (Ic) and ALC levels (ALC) to ensure that you are not over-driving the transmitter. Both will greatly shorten tube life, cause distorted transmitted audio, and is the prime source of television interference (TVI).